RB have developed handy tool set for working with .12, .21 and .28 engine bearings, both front and rear. Removing the front bearing is now very easy and smooth with this special tool and it also allow you to fit both the front and rear bearing into the crankcase of your engine, whatever the size and brand. For high accuracy, this tool has been made from ground steel and the set comes supplied in a plastic box with the instruction manual. Fit all the engines with the following diameters, 11.5, 12, 13, 14, 14.2 & 14.5mm. The rear bearing extraction still requires the previously available RB tool.