Park Tool Freewheel Remover FR-2 Color:Black 1-1/8" and 1-1/4" headsets

1-1/8" and 1-1/4" headsets

5mm outside spline diameter and 7mm thread size nipple

so the hose doesn't even affect the pump's efficiency

Race Face Aeffect Dropper Seatpost

but not all

Park Tool Freewheel Remover FR-2 Color:Black 1-1/8" and 1-1/4" headsetsFREEWHEEL REMOVER Heat treated alloy tool steel, one inch base fits wrench or bench vise. Thin wall construction allows use without removal of cones and locknuts. FR 2 FEATURES: Fits older Sun Tour two notch freewheels Two notches are approximately 25mm across measured outside to outside Always use a skewer or axle nut to hold remover firmly in place NOTE: The Sun Tour four notch freewheels do not accept the FR 2 remover. Use the FR 3 for the Sun Tour