These lace tips are made of surgical stainless steel and allows for smooth transitions with secure connections. This package contains 2 inch and one 3 inch set of the same size tip and two blue cables. Combo packs contain one 2 (5cm) and one 3 (8cm) set of the same size tip as well as two cables allowing knitters to make 9 (23cm) - 12 (31cm) circulars are solid, have a MINI diameter join and tightening hole. Tip sizes are hollow, have an [S] diameter join and come with our new blue X-Flex cables!