Including 4pcs sleeve (37mm),1pcs quick-release rod (110mm), 8pcs batch head (50mm), 1pcs AD connector (25mm) and 20pcs batch head (25mm) to meet the daily use requirements. Equipped with a storage box with movable hanging holes, it can be placed anytime and anywhere, which is convenient for carrying and storage. Ratchet screwdriver head is made of high-density chrome vanadium steel and alloy steel, which can bear greater torque, resist corrosion and have beautiful appearance. Multi-bit kit suitable for home/computer/car/bicycle maintenance Name:Ratchet screwdriver bit combination set Colour:Silver Material:steel Package Contents: 1 * Ratchet screwdriver bit combination set Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.