Radial Tube Bumper, Free Height: 6.49 in./164.8 mm Length: 42 in./1066.8 mm Peak Force: 49,000 lbs./21,7700 N – Radial Tube Bumpers, RTB are designed for low end-load applications, 1,500 to 42,700 lbs. uniformly loaded the radial tube bumpers are oval in shape and available in 6 to 42 inch lengths. Any application involving shock or collision protection is suitable for using TecsPak Radial Tube Bumpers.