1/4 in. Drive SAE/Metric Ratchet and Socket Mechanics Tool Set (50-Piece)The MILWAUKEE SAE & metric 50 piece 1 4 in. drive ratchet & socket set was designed from the ground up to offer better access in tight spaces and maximum tool strength. The 90 tooth ratchet tool offers 4 degrees of arc swing and a slim profile design, allowing work in tighter spaces. Innovative socket design has four parallel flats, which deter rolling and are wrench compatible. Optimized socket geometry helps reduce bolt rounding and stripping.