32-Piece Double-Drive Screwdriver Set Patented Double DriveTM technology 2 times faster than standard ratcheting non-slip rubber grip Convenient thumb 32-Piece Double-Drive Screwdriver Set Patented Double DriveTM technology 2 times faster than standard ratcheting non-slip rubber grip Convenient thumb switch. Patented Double DriveTM technology 2 times faster than standard ratcheting non-slip rubber grip reverses gear drive Multiple sizes for all applications Bits storage, function in handle