Kobra Tools’ SocketPro continuously adjusts to all sizes within 3/8″ to 3/4″ SAE and 10 to 19mm metric range. It tightly grips rounded-off, rusty or worn fasteners, that defeat regular sockets. It also allows for single handed use as it holds the fastener in place for installation. The socket can handle up to 100 ft-lbs of torque. The socket also prevents rounding of corners due to forces exerted to the center portion of fastener sides SocketPro is made in Canada of high quality alloy steel; jaws have over 50 Rockwell C hardness, housing and collar have over 47 Rockwell C hardness. The springs are made of stainless steel, designed for more than 10 million cycles. For more information, visit www.socketpro.com.