This K-Tool XD product comes with a patented 90 tooth design which is excellent for tight working space (Included Sizes: 21X22MM AND 24X25MM);Extra long, flexible and reversible making it the most versatile set of ratcheting wrenches on the market;The 180� rotating head on both ends of the wrench allows the ratchet wrench flexibility to bypass obstacles for easy use at any angle;Innovative internal gear mechanism and spherical profile (Spline Plus) makes this one of the best performing ratcheting wrenches available;Raised box end gear provides more surface contact and access to recessed fasteners;Included Sizes: 21X22MM AND 24X25MM