The Mac Tools Magnetic Drill Bit Holder, No. MDBH, features 42 slots for drill bits in sizes ranging from 1/16" to 1/2" with an extra row for 1/4" hex shank bits. The holder attaches to walls, tool carts, or any other magnetic surface with an anodized mag rail base with neodymium magnets. It is available in red (No. MDBHR), green (No. MDBHG), and orange (No. MDBHO).