Mac Tools introduces the new 1/2 inch to 3/8 inch and 3/8 inch to 1/2 inch Locking Universal Adapters - VX3UL / XV3UL. If difficult angles and hard-to-reach fasteners are the problem, then Mac Tools™ New Locking Universal Adapters are the solution. These adapters boast a locking collar that holds sockets firmly in place, and also allows for quick release when finished with the job at hand. The universal design allows entrance into tight areas with 360 degrees of swivel action for optimal access. In addition, the Mac Tools Locking Universal Adapters feature a high polish, chrome plated finish for long lasting corrosion protection. For more information call (800) MACTOOLS or visit www.mactools.com.