Mini (M) - Screw into your cable ends to hold a current project while using the tips for another. For sizes US000 (1.75 mm) to US1.5 (2.5 mm)
Small (S) - Screw into your cable ends to hold a current project while using the tips for another. For sizes US2 (2.75 mm) to US8 (5 mm)
Large (L) - Screw into your cable ends to hold a current project while using the tips for another. For sizes Us9 (5.5 mm) to US15 (10 mm)