From the Loftsmith community

Carabiner-locked keychain capsule

A little screw-top capsule for the things you want on your keys but not rattling loose. It has a lug with a hole so it clips straight onto a carabiner, and the ribbed cap is easy to grip. Change the inside length to fit what you're carrying.

2 parts · 18 g · 48 × 35 × 49 mm