This is a very useful tool. Using CRV steel material, quenching and hardening make the product life longer. The screwdriver bit adopts precisions manufacturing technology, and the outer box is firmly to better protects the bit from moisture and oxidation. The handle of the stab wheel device can freely choose the twisting direction, various combinations, no need to repeat purchase, saving space and money. Come on and try it.Features:Using CRV steel material, quenching and hardening make the product life longer and safer to use.The screwdriver bit adopts precisions manufacturing technology and has the characteristics of high precisions.The outer box is tightly to better protects the-bits from moisture and oxidation.The handle of the ratchet device can freely choose the direction of twisting. When the it turns to the right, the right direction of the bit is locked, and the left side can be turned, suitable for screwing in, while the ratchet is adjusted to the left, the left direction of the bit is locked, and the right side can be drilled. Suitable for remove the screw out.Diverse combinations, no need to repeat purchase, saving space and money.Specifications:Material: CRV steelModel: 2880BBit number: 22Bit type: 2.3, , , H5, H6, Pz2, Pz3, Y2, Y3, U4.0, U6.0, T10, T15, T25, T30, PH0, PH1, PH2, 3.0, 5.0, 6.0Number of sockets: 10 pcsBit length: 25mm / 1.0inBit diameter: 6.35mm / 0.3inBit hardness: 48~52HRCExtension rod: 135mm / 5.3inExtension shaft: 60mm / 2.4inRatchet handle-1:130mm / 5.1inRatchet handle-2: 135mm / 5.3inPackage size: 165 * 95 * 45mm / 6.5 * 3.7 * 1.8inPackage weight: 752.5g / 1.7lbPacking List:22 * Bit1 * Sleeve Joint1 * Extension Rod1 * Universal Rod1 * Wind Hook Screwdriver10 * Sleeve2 * Ratchet Handle