Universal Clamp system 1"- 2 1/4" Mounting Our universal clamping system is a quick and easy way to mount almost anything to a roll bar. From shovels to spare axles, these rubber clamp systems can secure almost anything measuring from 1" to 2 1/4" around. Machined from 6061 aluminum, Black anodize finish; 1" to 2 1/4" clamping area, 25 lb working load, Mounts almost anywhere.