K Tool International 7 Piece Torque Extension Set 1/2" Drive 55-175 ft-lb

7 Piece Torque Extension Set

This 1/2" drive torque extension set contains seven colour-coded bars ranging from 55 ft-lb to 175 ft-lb. It is designed for automotive technicians and DIY mechanics who need to tighten wheel nuts to precise specifications without over-torquing. The set covers common torque values for foreign and domestic cars and light trucks. Each extension helps prevent damage to thin-wall impact sockets and alloy wheels.

Practical torque limiting

These extensions act as mechanical torque limiters that flex when the preset value is reached, stopping further torque transfer to the fastener. They must be used with a calibrated impact wrench and thin-wall impact sockets to function correctly. The accuracy of each bar depends on the tool's output consistency and socket condition. They do not replace a click-type torque wrench for final verification on critical assemblies.

55 to 175 ft-lb range

The set spans 55, 65, 80, 100, 120, 140 and 175 ft-lb, identified by red, yellow, green, light blue, white, black and orange colour codes respectively. This range covers most passenger vehicle and light truck lug nut specifications. Buyers whose vehicles require torque values outside this spread will need additional extensions or a different tightening method.