Made for us exclusively, to our professional specifications, and are forged, taper-ground and polished. Dimensions set to give you size overlap from pin to pin to cover every conceivable situation. Tapers are 2 1/2" long on the 4" long pins. Mfg: Brownells SPECS: Taper as follows: Small, from .070" (1.8mm) to .156" (4.0mm); Medium, from .110" (2.8mm) to .187" (4.7mm); Large, from .150" (3.8mm) to .219" (5.6mm). Knurled handle. Steel.