208-Piece Security Bit Set Screwdriver Key Hex Holder Tamper Proof Torx Adaptor208 Piece Security Bit Set Screwdriver Key Hex Holder Tamper Proof Torx Adaptor 208 Pieces including Nut Drivers, Security Bits, Torx, Slotted, Phillips, and other Special Bits in commonly used sizes. Made of high grade carbon steel (50BV30 6150 Grade), sand blasted bits that are made to last. Comes in a hard plastic case and includes multiples of the most common bit sizes so you can keep working. Labelled slots to keep bits organised. Adaptor