Thexton Mfg's improved Universal Master Cylinder Bleeder Kit, No. 803X, allows techs to bleed master cylinders on or off the vehicle. Replacing the original kit, No. 803, the 803X offers US and metric adapters organized in a re-designed foam interior by size and type. The kit features 26 adapters. SAE sizes include: Two 3/8-24, two 7/16-24, two 9/16-18, two 9/16-20 and two 1/2-20. Metric sizes include: Four M10 by 1.0, four M10 by 1.25, two M11 by 1.5, two M12 by 1.0, two M12 by 1.5 and two M13 by 1.5.