6mm Screwdriver Handle - Holds 8 Bits - Ultralight

thingiverse

Holds up to 8 bits. But using the hole at the back is not recommended, so 7 is optimal. If you are feeling fancy, you can print 2 and stack them and it holds 6 more and total of 13. (Check last two pics). It weights just 3 grams on its own. You can use it even if you don't have a magnetic holder or whatever its called. Holes are a bit tight right after you print it. Use a hammer or something to force the bits in and out few times. Holes are tight enough to hold the bits even when screwdriver is dropped, but loose enough to remove and replace them (again, you NEED to expand the holes, especially the front one). Print with 0.4 layer width. My printer was able to print it only when its slowed down to %60 of standart speed I use.