One action trigger releaseErgonomically shaped handles for comfortable workingOne-handed operationStrong but soft jaws to protect your workStrong lightweight design makes it easy to clamp and hold your workEasy tool-less conversion for spreadingHigh quality steel bar337 lbs. clamping forceRange starts at 12":12" Easi-Clamp - Model 72003-30018" Easi-Clamp - Model 72003-45024" Easi-Clamp - Model 72003-60036" Easi-Clamp - Model 72003-900