The Monstro-Clamp 4" fastens to those really big, (2-3/8" OD to 4" OD), pipes. CNC cut from solid one inch thick aluminum plate. 1/2"-13 ~ 4 square head bolt. Minimum Size: 2" pipe, 2.375" OD Maximum Size: 3.5" pipe, 4" OD
The Monstro-Clamp 4" fastens to those really big, (2-3/8" OD to 4" OD), pipes. CNC cut from solid one inch thick aluminum plate. 1/2"-13 ~ 4 square head bolt.