Feature:1. 31pcs in 1 Set: Comes with 30pcs screwdriver bit in various sizes, meeting all your working needs in different places.2. Extensive Uses: Allows for wide application in the repair, maintenance and assembly of phone, laptop, equipment, etc.3. Better Designs: Combining locking mechanism, metal collet and rotating cover design for accurate screws positioning.4. Great Material: Mainly made of high quality alloy steel and TPR materials for excellent durability.5. Smart Carrying: The storage box included will store all the accessories in an orderly way to simplify the carrying.Specification:Item Type: Screwdriver Bit SetModel: SD-9802Material: alloy steel, TPRFunction: For equipment maintenanceBasic Parameters: 8 x Star Screwdriver Bit (T4 T5 T6 T7 T8 T10 T15 T20)4 x Screwdriver Bit (PH00 PH0 PH1 PH2)7 x Hex Screwdriver Bit (0.9 1.3 1.5 2.0 2.5 3.0 4.0)6 x Slot Screwdriver Bit (1.5 2 2.5 3 3.5 4)5 x Screwdriver Bit1 x Hex Handle1 x Handle1 x Storage Box Package List:8 x Star Screwdriver Bit (T4 T5 T6 T7 T8 T10 T15 T20)4 x Screwdriver Bit (PH00 PH0 PH1 PH2)7 x Hex Screwdriver Bit (0.9 1.3 1.5 2.0 2.5 3.0 4.0)6 x Slot Screwdriver Bit (1.5 2 2.5 3 3.5 4)5 x Screwdriver Bit1 x Hex Handle1 x Handle1 x Storage Box