Bits for GDR 12V-105
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Hello! Recently I purchased the GDR 12V-105 for some DIY home repair tasks. Would like to know if the following bits ( drill bits for wood and thin metal sheets and screwdriver bits) will fit perfectly for this tool? (I've tried some unknown brand bits of 1/4" hex head but they fit very loosely)
1. Bosch Hex-9 Multi Construction 5,6,8mm Impact Bit 50mm 2608577144
2. Bosch 2608572075
Thank you very much for your kind attention.

This post was edited by nicraft on 04.02.2018, 17:58 o’clock
Reason: Add more info.

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Hi when you say they fit loosely do you mean side to side play or in and out play ? The reason I ask is I use loads of different hex shank drill bits in my impact drivers from cheap hex shank drill bits for metal to the ones you have mentioned the bosch hex 9 bits and yes you obviously get play with a hex shank bit in an impact but there isn’t any difference between them all plus when you start drilling all the play goes and they drill perfectly infact I do 90% of my drilling now with my impact as they just drill a lot better due to the speed ! 
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Hi! Craigh9916 Thank you very much for the reply, I am not so sure if the 3mm in and out play is acceptable? I thought the hex shank needed to be like traditional round one for a tight fit. Thanks for your post, if 3mm play is ok, I will keep these bits.
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Yes that’s perfectly fine that’s how it’s supposed to be on anything hex shank in an impact driver and like I said when in use it doesn’t affect anything !
i have that impact driver it’s a nice impact .
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Hi! Craigh9916 You are totally right! Today I received the Bosch 2608572075 adaptor, and it has the same in and out play as you've mentioned before. Thank you for your professional feedback on this impact driver, hope I will manage to use it well.