The 3" (8 cm) precisely-machined, lace tips are made of surgical stainless steel.
Sizes US000 (1.5mm) – US3 (3.25mm) are solid, have a tightening hole and MINI diameter join.
Sizes US4 (3.5mm) – US8 (5mm) are hollow and have a [S] diameter join.
The size is laser imprinted on each tip.