OTC's Variable Pin Scanner Wrench features a universal design that fits many different types of pulleys having slots or holes, including camshaft pulleys, crankshaft pulleys, and more. Wrench is adjustable from 1-1/4 inches to 5 inches by loosening a single adjustment bolt. Use wrench as-is with it's approximate 12 inch overall length, or for more leverage, use with a 1/2 inch drive ratchet or breaker bar. Set includes the following pairs of high-strength steel pin sizes: 3.5 mm, 4 mm, 4.5 mm, 5 mm, 6 mm, 7 mm, 10 mm plus a heavy-duty steel handle assembly. The rugged blow-molded storage case keeps set components contained and organized so they are ready to use when you need them. Value is at the core of the OTC tool and equipment portfolio. Whether it’s a simple repair or the most complex drivability concern, these award-winning tools universally solve problems faster, and at better value, than any other product line available. Whether it’s a specialty tool or unique piece of service equipment, OTC provides top solutions to modern automotive service challenges while increasing technicians’ productivity and shop profits.