This Screwdriver Bit Holder comes with a Hex Shank of 6.5/6.3 mm and is ideal for holding 56 Bit Holders. Its diameter is 6.35 mm and is best suited for use with Screwdriver Bits. The Bit Holder Stand Rack can be easily mounted on the wall and is available in sets of 10Pcs or 20Pcs. The Screwdriver Bit Holder is perfect for use in Woodworking Supplies and CNC, Metalworking & Manufacturing. It is a must-have for Business, Office & Industrial settings. Get your hands on this amazing Bit Holder today and experience its efficiency in holding your Screwdriver Bits without any hassle.