Eliminates the problem of reaching around obstructions. Features 2 double reversing 5 degree ratcheting heads. Each box end features a reversing lever on both sides of the wrench that allows direction changes from either side. Allows the fastener to be moved as little as 5 degrees in both directions without removing the wrench Sizes include: 3/8" x 7/16", 1/2" x 9/16", 5/8" x 11/16", and 3/4" x 7/8".