Feature: 1. 33Pcs in Pack: There are 33pcs security screwdriver bit in different shapes, meeting your various work needs. 2. Extensive Use: Allows for wide application in the maintenance and repair of automotive, computer and so on. 3. Perfect Match: Enables manual operation as well as perfect match with 1/4in hex shank tools, very practical. 4. Good Material: Made of high quality chrome vanadium steel, very sturdy and has good durability for long use. 5. Easy Storage: Comes with a storage box which can store all the tools in an orderly way, very easy to carry. Specification: Item Type: Security Screwdriver Bit Material: Chrome Vanadium Steel Function: Security Screwdriver Bit Set Screwdriver Shank Type: Hex Shank Screwdriver Shank Size: 1/4in Package List: 32 x Security Screwdriver Bit 1 x Screwdriver Shank 1 x Storage Box