120XP ratchets have two double stacked 60 tooth pawls (120 positions) providing a 3 swing arc so you can turn fasteners in tighter confines;Double-stacked pawls alternately engage the 60 tooth gear, providing exceptional strength;Sockets feature off-corner loading design reduces fastener rounding;Extension bars features a knurled grip, providing a non slip surface;Bright, full polish chrome finish easily wipes clean and resists corrosion.