Made of steel with black oxide finish that resists rust and corrosion Easily converts for either external or internal use on snap rings Push button feature allows for effortless change of ring, hex shape locking guides, spring loaded, broached jaws fortip control and stability, ergonomic anti-slip air pocket grips for comfort Pliers fit internal ring sizes 1/4 through 1 inch (6.4 through 25.4mm) and external ring sizes 1/8 through 1 inch (3.2 through 25.4mm) Includes: five pair of color-coded tips in sizes 0.023 straight, 0.036 and 0.047 straight and 90 degree Hex stock size of tips .092.