Internal snap rings designed for use in housings, boxes, etc with bore diameters .375 to 1.750 inches. External snap rings designed for use in shafts, studs, etc with shaft diameters .250 to 1.438 inches. PL-1600C-1 and PL-1600C-2 each supplied with 8 tips (2 each: 90 x .035 and 45 x .045 angle tips and .045 and .060 straight tips). Made of high quality carbon steel with black-oxide finish to resist rust and other corrosions. Tips heat treated for a secure grip. Pliers provided with cushion grip handles