GearWrench's XL Pass-Thru Ratchet and Socket System eliminates the need for two sets of sockets. With 11 locking head positions and a head profile up to 50 percent thinner than conventional ratchet systems, it provides unprecedented access in tight automotive applications. The ratcheting box end requires as few as five-degrees of swing arc to move fasteners, which dramatically increases productivity. The XL Pass Thru System can lower overall costs because automotive technicians no longer need deep sockets. Additionally, these sockets work where even deep sockets won't, such as providing access to a nut halfway down a threaded rod.