This tool enables changing the clutch plates of a smallframe while mounted. Additionally, you'll need the matching clutch removal tool with M10 (4) or M12 (5) screw. The clutch puller is first mounted without screw. Next, fit the clutch compressor over the puller tool and turn the screw on puller tool. The clutch compressor presses the clutch base plate and so pushes the clutch springs together. This reduces the pressure from the clutch plates so that these can be removed while mounted!
SIP-TIP: Don't forget matching clutch puller, plates and gearbox oil! Don't forget to check the pressure plate and push rod for damage during each change.