The Performance W2500-36MM are Replacement Bits for Performance Impact Driver W2500P and other similar models. Features: * Replacement bits for Impact Driver W2500P * Includes four bits, each on 5/16-inch (7.9mm) hex shanks: * Two Phillips bits sizes #2 and #3 * Two slotted bits sizes 5/16-inch (7.9mm) and 3/8-inch (9.5mm) What"s In The Box: * Performance W2500-36MM Replacement Tips for W2500P