12 pc. Metric X-Beamª XL Ratcheting Combination Wrench Set Sizes Include: 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19mm. Ergonomics- Unique ergonomic design increases surface contact on your hand by up to 500% and allows you to apply force to the flat of the wrench reducing hand fatigue.. Length- Up to 25% longer for additional leverage and access those hard to reach fasteners.. Strength- Surface Drive Plusª provides stronger grip on fasteners, delivers up to 25% more torque, and reduces fastener rounding.. Reduces head clearance by up to 75% 85888 No -