Here is another 1/4 in. bit holder. Suitable for 8 bits (six holes for short bits, with 10mm deep, and two holes for long bits, with 16mm deep (See pictures). Designed to be attached to the side of a tool box. Angled about 30 degrees for easier access. Every bit hole has a small protuberance in two of its inside walls, for keeping the bits from falling. Fastening holes are 4.9mm. Printed with PP filament.