New Williams 15pc Combination Wrench Set SUPERCOMBO Non-Ratcheting. This is a top-quality 15-piece combination wrench set from Williams, which is perfect for all your heavy-duty mechanic needs. The wrenches are made with a chrome plated finish that ensures durability and resistance to corrosion. The set includes various sizes of wrenches with an offset design for easy access to hard-to-reach areas. The wrenches are non-ratcheting, making them perfect for use with standard (SAE) measurements. The set is ideal for those looking for a high-quality wrench set that is built to last. With its double-ended design and polished finish, this set is the perfect addition to any toolbox. Heavy duty, Chrome plated, Polished finish. Strong Heavy Duty Williams Wrenches. Sizes: 5/16, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 13/16, 7/8, 15/16, 1, 1-1/16, 1-1/8, & 1-1/4. SUPERCOMBO® open end has specially designed grooves that direct wrench force away from fastener corners SUPERTORQUE® box opening design allows application of higher torque without rounding or deforming hex fastener points. No contact is made at the corners. Instead, wrenching forces are placed on the flat surfaces behind the points. Meets or exceeds aerospace specification AS 954 for 12 point fasteners (as defined by AS 870) to provide accurate torque/tension relationship for precision application. May be used on all common hex (6 point) fasteners with considerable advantage over conventional box end wrenches to increase both hand tool flexibility and economy. Box and open end openings are identical.