Park FR-5.2G Cassette Lockring With 5mm Guide Tool YGroup_7033468092461 It'll allow you to adjust

It'll allow you to adjust your suspension pressures

Air bleed button

When topping off a tube/tire that already has pressure in it

The cheek pads and headliners can be interchanged within the same EPS size to fine-tune the fit

The Stash capsule does NOT fit inside the 70cc pump

Park FR-5.2G Cassette Lockring With 5mm Guide Tool YGroup_7033468092461 It'll allow you to adjustCASSETTE LOCKRING TOOL WITH 5MM GUIDE PIN Heat treated alloy tool steel, one inch base fits wrench or bench vise. Thin wall construction allows use without removal of cones and locknuts. The FR 5. 2G has 12 splines that are approximately 23. 4mm across. FR 5. 2G FEATURES Fits Shimano, SRAM (including 1x), SunRace, SunTour, Chris King and other cassette lockrings Also fits some Shimano disc brake lockrings Guide pin stabilizes tool