12-9218: Used on all Arctic Round Shaft Drive Clutches to compress and hold the moveable sheave to replace cam arms without removing the clutch from the engine. Arctic Cat no. 0644-245. 12-9221: Used on Standard Polaris (P85 and P90), Arctic Cat Comet, Comet 102C, 108C, and 108EXP drive clutches to compress and hold the moveable sheave to replace weights, pins, clean and lube your primary clutch without removing the clutch from the engine. Arctic Cat no. 0644-123, Polaris no. 2870984, 2871173. 12-9224: This tool is a must for anyone who does clutch tuning! This tool will allow you to quickly and easily remove weights and rollers without having to first remove the primary clutch cover. This will save time and unwanted wear and tear on the bushing. The tool compresses the clutch quickly and with ease while the locking bracket holds it during service.