Snap on LTA1618, 1/2" x 9/16" Open - End Wrench, Offset, Low Torque, Slimline, 9.5"/23.75cm. Long. These wrenches are commonly referred to as "Tappet Wrenches"  as they are often used for adjusting Tappets or other jobs that require a slim low- torque device. This tool has normal signs of use, including etching, which we have shown in our photos. Wrench is in good working condition.