Hex shaped locking guides firmly hold tipsTough steel construction for durability and strengthErgonomic anti-slip sealed air pocket grips for comfortSpring loaded to speed the workBlack oxide finish rust and corrosionEasily convert for either external or internal use on snap rings. Unique push-button feature allows for effortless change. Tool comes with heavy-duty cushion-grip handles to provide comfort and broached jaws for tip control and stability. Use pliers on most internal snap-rings 3/8 through 2" (9.5 through 50.8mm) and external snap rings 1/4 through 2" (6.4 through 50.8mm). Pliers include 5 pairs of color-coded tips in sizes 0.036, 0.047 straight and 90 degree and 0.070 straight. Hex stock size of tips .092". Replacement part: 3151-77 Point Kit (includes 2 each of 5 different sizes: 0.036, 0.047 straight and 90ยบ and 0.070 straight)