Features: Pentagonal Head Screwdriver Bit Set -10 Size: H 2.15/ 2.85/ 3.15/ 4.05/ 4.35/ 5.15/ 6.35/ 6.75/ 6.95/ 7.55; Overall Length: 50mm/ 2Inch Security Tamper Proof 5Sided Screw Driver Bits Constructed of highly quality steel, with hardened constructions for durability Strong Magnetic Screwdriver Bits: each with strong magnets can accurately lock screws, easy to suck the screws, no damage to the screw 1/4Inch Pentagonal Bits for standard electrics screwdrivers, hand screwdrivers, electric drill/driver set & power tool attachments Specifications: Length:about 50mm/1.97in Pentagonal Head Screwdriver Bit Set -10 Size: H 2.15/ 2.85/ 3.15/ 4.05/ 4.35/ 5.15/ 6.35/ 6.75/ 6.95/ 7.55 Quantity: 10PCS Set Package Includes: 1Set Pentagonal Head Screwdriver Bit Set note: Due to light and screen difference, the item color may be slightly different from the pictures. Please allow 0.5-2cm differences- due to manual measurement.