The Matco 7 and 9 Series Ratcheting Wrenches offer an improved ratcheting wrench design that includes a 15-degree Knuckle Offset and best-in-class swing arc for enhanced performance that saves knuckles and grants easy access to small, confined spaces. The 72-tooth 7 Series delivers a 5-degree swing arc and the 90-tooth 9 Series delivers a 4-degree swing arc. The 9 Series also includes an anvil drive box end and an exlusive non-slip open end that works in both directions without reversing the wrench. Both sets are forged of high carbon alloy steel and full polish finish, and come with a lifetime guarantee.