TWIST Short Combo packs contain one 2″ (5 cm) and one 3″ (8 cm) set of the same size tip as well as two MINI red or Small X-Flex Blue cables allowing knitters to make 9″ (23 cm) & 12″ (31 cm) circulars. The tips are solid, surgical stainless steel and have a tightening hole. The Short Combos are currently available in sizes US000 (1.5mm) through US8 (5mm). The US000 (1.5mm) through US3 (3.25mm) come with Mini red cables. The US4(3.5mm) through US8 (5mm) come with Small X-Flex Blue cables.