Sturdy and Durable: This gear ratcheting wrench is forged from high-quality chrome vanadium steel. The wrench hardness up to HRC 50 makes the wrench able to bear more force. The surface is polished and chrome plated, and it has excellent rust and corrosion resistance. Efficient Wrench: The combination wrench is set up with a 12-point box end, to prevent round-off, it contacts and applies force to the flat sides of fastener heads rather than the corners. And combo ratchet wrenches have 72 teeth ratchet, realize 5 degrees swing to help tighten bolts efficiently, and are conveniently suitable for tight spaces. 22 Pieces in Metric and SAE Size: 22 pieces metric and SAE ratchet wrench sets include 6mm, 8mm, 9mm,10mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 1/4″, 9/32″, 5/16″, 11/32″, 3/8″, 7/16″, 1/2″, 9/1″, 5/8″, 11/16″ and 3/4″ combination wrenches, which meet most of your needs. And each wrench has clear dimensioning for quickly identifying the size you need. Easy Carry: The ratchet wrench set comes with an premium rolling bag, and each wrench storage bag is marked with the corresponding wrench size to keep all wrenches organized for easy carry and storage. Wide Application Scenarios: WORKPRO combination wrench sets have a wide range of application scenarios, including motorcycle repair, auto repair, home project, bicycle repair, machinery repairs, garage engineering, and so on. Material Chrome Vanadium Steel Head Style Open End, Box End Finish Type Polished Operation Mode Mechanical Organizer Box Chrome Polished Finish & Chrome Vanadium Steel Clear Dimensioning