SPRING LOADED TYPE; 18 AWG MIN. WIRE SIZE; 8 AWG MAX. WIRE SIZE; COMFORT GRIP HANDLE TYPE; STURDY DIE-CAST ZINC BODY MATERIAL; STRIPMASTER[R] BRAND; STRIPPING HOLE DIAMETER 0.055 TO 0.198 INCH; TOLERANCE +/- 0.001 INCH; INCLUDES KNIFE TYPE BLADE