iFixit Universal Bit Kit (128 bits) 128 Bits carefully selected to make the most comprehensive bit set ever! It takes something special to hold a bit set this epic, so we put it in a laser engraved oak case. Includes both 4mm and 1/4" handles and bits for both precision and larger jobs. Everything from Common Phillips and Flathead to uncommon bits like Game Bits and Schrader Valve iFixit Lifetime Warranty.