Your new go-to wrench for tackling bolts in virtually any condition, the WaveDrive Pro Combination Wrench features a specialized geometry that gives you a powerful grip on bolts, and even works as a bolt extractor on bolts that are up to 90% rounded off. WaveDrive Pro, on both open end (3-point) and box end (6-point), gives you a sure grip and satisfying turns on both unrounded and rounded bolts. WaveDrive Pro also prevents damaging and rounding of bolts. Stubby length handle lets you access hard-to-reach areas where clearance is limited. 15-degree offset box end for knuckle clearance and working in tight spots. Premium Chrome Vanadium steel construction with MaxChrome plating, impeccably polished and finished with careful application of chrome protective plating, ensures durability and corrosion resistance. 20-piece master stubby combination wrench set includes (12) metric sizes: 8 x 8, 9 x 9, 10 x 10, 11 x 11, 12 x 12, 13 x 13, 14 x 14, 15 x 15, 16 x 16, 17 x 17, 18 x 18, 19 x 19 mm, and (8) SAE sizes: 5/16 x 5/16, 3/8 x 3/8, 7/16 x 7/16, 1/2 x 1/2, 9/16 x 9/16, 5/8 x 5/8, 11/16 x 11/16, 3/4 x 3/4 in. Comes in our own spill-resistant Mechanics Tray for easy organization and storage. Tray dimensions: 15-3/4 in. (L) x 7-3/4 in. (W) x 1-1/4 in. (H), fits comfortably in most tool chests and cabinets. The Capri Tools WaveDrive Pro Combination Wrenches are a new generation of combination wrenches that lets you tackle bolts in virtually any condition. They feature WaveDrive Pro with a specialized geometry that gives you a powerful grip on bolts, even works as a bolt extractor on bolts that are up to 90% rounded off. WaveDrive Pro open end (3-point) and box end (6-point) give you a sure grip and satisfying turns on both unrounded and rounded bolts. WaveDrive Pro also prevents damaging and rounding of unrounded bolts. The stubby length handle lets you access hard-to-reach areas where clearance is limited. The box end is offset 15-degrees for knuckle clearance and working in tight spots. Made with premium Chrome Vanadium steel and each wrench is impeccably polished and finished with careful application of our MaxChrome protective plating, ensuring durability and corrosion resistance. Capri Tools WaveDrive Pro Stubby Combination Wrench Set, Regular/Rounded Bolt. We are here to help if you have any questions. Simply send us a message and we will respond within 24 hours, Monday to Friday.