XL ratcheting set is 25 percent longer for better access and greater torque. Surface drive provides a stronger grip on fasteners and nearly eliminates fastener rounding. The sleek oval shaped beam provides improved comfort. The ratcheting box end needs as little a 5 degrees to move the fastener. GrearWrench products are warranted for life to be free of defects in material and workmanship The set includes 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, 21mm, 22mm, and 24mm.