10mm 120XP™ UNV Spline XL Flex Head Ratcheting Comb Wrench Get the GEARWRENCH 86210 10mm 120XP‚Ñ¢ UNV Spline XL Flex Head Ratcheting Comb Wrench for your next project. The GEARWRENCH 120XP‚Ñ¢ UNV Spline XL Flex Head Ratcheting Combination Wrench has a metric size of 10mm.