Made Of Hardened Steel, Long Life, Accurate Bore Diameter, And Good Crimping Effect The Crimper Has Individual Settings Including 6mm / 10mm / 16mm / 25mm / 35mm / 50mm Due To Nice Handle Grasping Position, Light And Compact Structure And Handle Design Ensure Perfect Crimping Effect. Easy Operation: Press To Rotate The Inside Dies Precise Crimping Die Sets And Integral Lock With Self Releasing Mechanism Ensure Fine Quality Crimping Effect After Crimping Repeatedly.