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. This combination wrench has an open end with spline style head and flex head ratcheting system. The GEARWRENCH 120XP‚Ñ¢ UNV Spline XL Flex Head Ratcheting Combination Wrench has a metric size of 10mm..