Product Name: Ko-ken Ko-ken 9.5sq 12-point socket 13, 17, 19 - 5 pieces each Features: The flat drive, which makes surface contact to reliably transmit high torque without damaging the corners of the square drive on the insertion side, as well as the opening that contacts the bolt/nut, was the first of its kind to be adopted in Japan. Not only does it prevent damage to the corners of bolts/nuts, but it also disperses the stress on the socket, achieving an increase in load capacity. This is a used item, stored in a toolbox, so there may be scratches, dirt, and rust. Please make your judgment based on the photos. There are no problems with the performance. Shipping will be in simple packaging. Please purchase only if you understand this. #Tools #Wrench #Ratchet Wrench #Ratchet Wrench #Ratchet Spanner #Swivel Ratchet #Socket