The Heavy Duty Creeper JointTM has been tested to 4,700 ft-lbs of torque in Trail- Gear’s very own axle testing machine. These U-joints fit most 1979-1995 4wd applications. Includes four install clips and and Zerk grease fitting (not shown in photo). These u-joints have been trail tested and have been proven to provide excellent strength at a reasonable price. Just as a comparison, the stock joints fail at 3,700 ft-lbs of torque. We find that keeping a spare is at least a good backup when out on the trail.