Steering Stabilizer ClampPerfect for steering stabilizer Diamond Knurls on ID CNC Machined TIG Welded American Made 1 2 20 and 5 8 18 threads Our Steering Stabilizer Clamp is a must for the hard core offroader. Our Steering Stabilizer Clamp has Male Diamond Knurls on the ID to help keep the clamp from moving. This gives the clamp extra grip to keep you moving in the right direction. Our clamp is offered in three different sizes. Select your size above in the drop down box.