Drill Bit Sets

Bosch EXPERT MultiConstruction CYL-9 drill bit set 4–12 mm

Bosch EXPERT MultiConstruction CYL-9 drill bit set 4–12 mm 7-pc

Bosch EXPERT MultiConstruction drill bit set 4–12 mm 7-piece.

Drill bit boring into a smooth tile surface.

Rotary hammer drilling into a textured concrete wall.

Person wearing safety equipment drills into a tiled floor using a power tool.

Drill bit creating a hole in a metal surface.

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EXPERT CYL-9 Multi Construction Drill Bit Set

For impact drill/drivers, For rotary drills/drivers

Up to 5x more precise than a Bosch CYL-3 Drill Bit

Test results

High Precision drilling in multiple materials
Accurate drilling is easier with Bosch Centering Geometry
Start holes accurately with a specially designed centring tip

Materials

Choose your Variant

EXPERT MultiConstruction CYL-9 Drill Bit Set 4/5/6/8 mm 4-pc

EXPERT MultiConstruction CYL-9 Drill Bit Set 5.5/6/7/8 mm 4-pc

EXPERT MultiConstruction CYL-9 Drill Bit Set 4/5/6/6/8/10/12 mm 7-pc

EXPERT MultiConstruction CYL-9 Drill Bit Set 5/5.5/6/6/7/8/10 mm 7-pc

4 options

Available product options (6)

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Your Selected Variant

EXPERT CYL-9 Multi Construction Drill Bit Set

Find a local dealer

High Precision drilling in multiple materials

Bosch PRO U drill bit with reinforced carbide tip.

1

Accurate drilling is easier with Bosch Centering Geometry
2

Start holes accurately with a specially designed centring tip
3

High-performance carbide tip manufactured by fine grinding
4

Optimised dust extraction channel for fast, efficient drilling

For impact drill/drivers, For rotary drills/drivers

Fits tools of most brands

Drill bit being inserted into a power drill chuck.

Rotating drill chuck spinning a masonry bit for drilling applications.

A drill chuck holds a spiral drill bit with a blue tip.

Cylindrical shank compatible with three-jaw drill chucks

Precise Drilling in Every Material

EXPERT CYL-9 Multi Construction Drill Bit for Maximum Precision Drilling Multiple Materials

The modern construction site requires working on many different materials and you never know what you will need to drill next. Finding the right drill bit can be difficult and time-consuming – unless you have the EXPERT Multi Construction Drill Bit.

Product Options

Available product options: 6

Part number	Diameter mm	Working length mm	Total length mm	Pack quantity	Availability
2 608 900 645	4.0; 5.0; 6.0; 8.0	40; 50; 60; 80	75; 85; 100; 120	4 Pcs	Find a local dealer
2 608 900 646	5.5; 6.0; 7.0; 8.0	50; 60; 60; 80	85; 100; 100; 120	4 Pcs	Find a local dealer
2 608 900 647	4.0; 5.0; 6.0; 6.0; 8.0; 10.0; 12.0	40; 50; 60; 60; 80; 80; 90	75; 85; 100; 100; 120; 120; 150	7 Pcs	Find a local dealer
2 608 900 648	5.0; 5.5; 6.0; 6.0; 7.0; 8.0; 10.0	50; 50; 60; 90; 90; 90; 90	85; 85; 100; 150; 150; 150; 150	7 Pcs	Find a local dealer
2 608 900 649	4.0; 5.0; 6.0; 8.0	40; 50; 60; 80	75; 85; 100; 120	4 Pcs	Find a local dealer
2 608 900 650	5.5; 6.0; 7.0; 8.0	50; 60; 60; 80	85; 100; 100; 120	4 Pcs	Find a local dealer

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Frequently asked questions

Interface

Which shank type should I use, cylindrical (CYL) or hexagonal (HEX)?

The HEX shank has several benefits over the CYL shank. While both shank types fit into three-jaw chucks of a standard drill, the HEX shank offers a more secure connection: due to its geometry it won’t slip in the chuck. The HEX shank ensures maximum power transfer from your machine to the drill bit. The HEX shank also gives you more flexibility when choosing your tool: you can use it with standard drills with three-jaw chucks as well as impact drivers with ¼” internal hexagon tool holders. The 3-wing shank of our CYL-5 drill bits only fits three-jaw chucks, but otherwise it offers benefits similar to those of the HEX shank: it fits in the chuck securely, it doesn’t slip and ensures maximum power transfer from your machine to the drill bit.

Material

Which Impact and Rotary drill bits should I use to drill into concrete, brick, stone and various materials?

CYL-1: Suitable for brick and limestone. CYL-3: Suitable for concrete, soft stone, brick and limestone. CYL-5 / HEX-5: Suitable for concrete, soft stone, brick and limestone. The 3-wing shank of CYL-5 drill bits only fits three-jaw chucks, but otherwise it offers benefits of the HEX shank: it ensures a strong connection and maximum torque transmission from your machine to the drill bit. The HEX shank is also versatile: it fits into standard drills with three-jaw chucks and impact drivers with ¼"" internal hex tool holders. CYL-9 / HEX-9 Multi Construction: Suitable for various materials, including concrete, brick, soft ceramic tiles, wood, plastics, sheet metals, aluminium and multi-layered (sandwich) materials. The HEX shank ensures a strong connection and maximum torque transmission from your machine to the drill bit. It’s also versatile: it fits into standard drills with three-jaw chucks and impact drivers with ¼"" internal hex tool holders. Impact and Rotary drill bits come in diameters of up to (and including) 16 mm and total lengths of up to (and including) 400 mm. For larger diameters and lengths use SDS plus and SDS max drill bits for concrete and stone applications.

How can I tell if a tile is hard or soft?

A tile’s hardness is not always easy to determine. The Mohs scale or PEI rating is often used to indicate the grade of the material’s hardness. The price of the tile can also help you estimate its hardness: hard tiles normally cost more than the soft ones. The size of your tile can be an indicator as well. The tiles 30x30 cm or larger are normally hard (as, otherwise, considering their size, they would easily break).

Technique

What speed and gear should I use when drilling in concrete, brick, stone and various materials with my impact and rotary drill bits?

Choose gear 2 for the fastest results in all materials except for ceramic tiles. If your power tool doesn’t have gear settings, keep the speed at a high rpm, using the trigger. When drilling in ceramic tiles, the power tool should be set to gear 1 to prevent the drill bit from overheating. If you’re using a corded tool, in addition to setting it to gear 1, you also need to control the speed by pushing the trigger halfway only in order not to go over 500 rpm (as, otherwise, it will go up to 1000 rpm). If you’re using a cordless tool, you don’t need to control the speed through the trigger once the tool is set to gear 1, due to cordless tools’ lower rpm limit. If your tool doesn’t have gears, keep the speed at low rpm (max. 500 rpm), using the trigger.

Which drilling mode should I use when drilling in multiple materials with CYL-9 and HEX-9 MultiConstruction drill bits?

Use the impact mode when drilling in concrete, stone and full brick. Apply the rotary mode when drilling in metal, steel, wood and plastics as well as brittle materials, such as hollow brick and ceramic tiles.

Do I need to apply cooling when drilling with Bosch impact and rotary HEX and CYL drill bits?

Cooling can help extend the lifetime of your drill bit if applied in the right way, but you don’t need to apply it. When drilling in hard stone, we recommend letting the drill bit cool down each time you drilled a hole.

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