SPRING LOADED TYPE; 30 AWG MIN. WIRE SIZE; 20 AWG MAX. WIRE SIZE; COMFORT GRIP HANDLE TYPE; STURDY DIE-CAST ZINC BODY MATERIAL; STRIPMASTER[R] BRAND; STRIPPING HOLE DIAMETER 0.016 TO 0.048 INCH; TOLERANCE +/- 0.001 INCH; INCLUDES KNIFE TYPE BLADE