S.U.R.&.R.'s TC40 Automatic/Ratcheting Tubing Cutter is an innovative design that allows you to tighten once and the spring loaded cutter does the rest. Product Features:Ratcheting Action HandleSpring-loaded Automatic CutterCuts 1/8 - 1/2 TubingIncludes Built-in Tubing ReamerReplacement Blades Available (PN# TC40B)