OTC's 10 mm, 12 pt., box-end, ratcheting Battery Terminal Wrench is designed for use on the 10 mm battery terminal bolts found on many import and domestic vehicles. This handy wrench features a slim design and a short, 5-1/2 inch long handle to allow use in the tight underhood confines of today's modern vehicles. The handle and leading edge of the tool are both insulated to help protect against unintended metal to metal contact that causes the sparks to start flying. Convenient thumb switch changes ratchet direction. Durable construction ensures reliable performance and a long life. Value is at the core of the OTC tool and equipment portfolio. For 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.