Features: 1. The screwdriver handle can meet the batch head (cross T type plum blossom plug head six angle extension rod universal joint can receive bending rod) 2. The socket is made of high quality chrome vanadium steel 50 BV30 cold pressed, and the torque is 50% higher than that of carbon steel. The surface is treated with poor quality and smooth surface, and the rust proof effect is good. The batch head is made of CR-V material, with higher hardness and higher toughness. 3. The fast drop ratchet wrench (positive and negative adjustable), button fast release function ensures that the THT socket is safely locked during use, but it also allows easy removal or quick replacement of the socket EVEV oily or oily finger. Our high quality 45 teeth ratchet wheel can improve running speed. Is an open throttle, in air conditioning, seat nut, tire fender, door lock, household (basically included) often used in a set of small screws and nuts set the ideal set of tools. Specifications: Material: high carbon steel Maximum size: About 14mm 21pcs sleeve batches: Flower type inner hex: T10/T15/T20/T25/T30/T40 Flat head inner hex: H3/H4/H5/H6/H7/H8 Straight: S4/S5.5/S7 Cross: PH1/PH2/PH3 Star: PZ1/PZ2/PZ3 13pcs 1/4 "six angle sleeve: 4-4.5-5-5.5-6-7-8-9-10-11-12-13-14mm 1pc 1/4 "universal joint 1pc 1/4 "elastic connecting rod 2pcs 1/4 "connecting rod(50mm, 100mm) 3pcs L type inner hex wrench (1.5-2-2.5mm) 1pc 1/4 "slide bar 1pc 1/4 "interface small square rod 1pc 1/4 "fast shedding ratchet wrench