Handy end stoppers for ChiaoGoo interchangeable cables so that you can use your tips on another cable.

Mini end stoppers [MINI] fit small interchangeable cables for tip sizes up to 1.5mm 2.5mm.
Small end stoppers [S] fit small interchangeable cables for tip sizes 2.75mm up to 5mm.
Large end stoppers [L] fit large interchangeable cables for tip sizes 5.5mm up to 10mm.