EXTENSION, 12", 1/2" SHANK

For chuck size 1/2" and larger. Fits arbor: 1L, 2L and 3L. Impact hex shank allows for quick changing of the bits. Size: 12" For chuck size 1/2" and larger Fits arbor: 1L, 2L and 3L Also fit snap-back 2L Impact hex shank allows for quick changing of the bits.