Park Tool FR-5.2G Cassette Lockring Tool with 5mm Guide Pin pickuponly 1-liter version offers almost as

1-liter version offers almost as much stowage space as a small backpack

EXO Protection offered in select models

they make this piece specifically for women

Super low-profile

There is also a separate zippered inside pocket that allows you to store your valuables in a designated quick-access location

Park Tool FR-5.2G Cassette Lockring Tool with 5mm Guide Pin pickuponly 1-liter version offers almost asFor removing and installing cassette lockrings on Shimano compatible freehub bodies and some Centerlock disc brake systems. Fits 12 spline cassette lockrings from Shimano, SRAM, SunRace, SunTour, Chris King and others FR 5. 2G uses a 5mm guide pin designed to fit perfectly inside a Quick release axle