This tapered buff bob is perfect for reaching grooves and recessed areas. The 100% cotton buff works faster and lasts longer than traditional felt buffs and is ideal for rims and manifolds. The tapered buff features a 1/4 in. shank that fits electric and cordless drills. 100% cotton buffs work faster and last longer than traditional felt buffs The 1/4 in. shank fits electric and cordless drills