All Platinum Tech® Ratcheting Wrench Sets Feature a Patented Spherical Spline Design that Works on (6) Different Fastener Types: Spline, 6-Point, 12-Point, Star/Torx®, Square & 50% Rounded off Heads; Offset box end gear provides more surface contact and access to recessed fasteners; 72-Tooth ratcheting system for high torque & 5º swing arc for operation in tight areas; Sliding switch button for quick change ratcheting direction; 180º flex feature & extra-long reach allows access to hard-to-reach places; High-polish, chrome-plated chrome vanadium steel for good looks and exceptional strength; Set Includes: PLT-99658 - 8mmx10mm - 12.41" Long; PLT-99662 - 12mmx14mm - 15.56" Long; PLT-99663 - 13mmx15mm - 16.07" Long; PLT-99666 - 16mmx18mm - 16.55" Long; PLT-99667 - 17mmx19mm - 18.12" Long