HEAVY DUTY SCREWDRIVER: The OX Multi-Bit Ratchet Screwdriver Bits are manufactured from chrome vanadium steel to increase its strength and durability. HANDLE OF RATCHET SCREWDRIVER: The handle of the OX Multi-Bit Ratchet Screwdriver has a small storage at the end for storing additional sized bits. EASY ACCESS TO THE SCREWDRIVER BITS: The storage space on the handle is ideal for keeping the bits safely and ensures accessibility to these bits whenever required. LOCKABLE RATCHET SCREWDRIVER: The OX Ratchet Screwdriver has a locking system to make it easy to work with. SIZES OF BITS: The OX Ratchet Screwdriver contains 3mm/5mm/6mm slotted, PH1/PH2 Phillips, PZ1/PZ2/PZ3 POZI drive, T10/T15 Torx bits., Manufacturer: OX Tools UK