The needle tips & cables of the SmartStix set, just all SmartStix items, have markings in 2 cm increments all across them. This means you can use the set like a measuring tape. Note for US customers: these marking spacings are slightly shorter (2 cm = 0.79 in) than the marking spacings on the US version of this product, which are exactly 1 inch. The ~12 cm (4.7 in) long needle tips are made of aluminium & warm easily when held, which makes them very pleasant to use. The cables are flexible & come in different colors (each length has a different color). The transition between needle & cable is so smooth, you can hardly tell its there. With the included cable keys, the connection process is hassle free. The set can be combined & extended with other short or regular length needle tips & cables by the same manufacturer. Contents: 8 pairs of needle tips, sizes: 3.5 mm (US 4), 4.0 mm (US 6), 4.5 mm (US 7), 5.0 mm (US 8), 5.5 mm (US 9), 6.0 mm (US 10), 7.0 mm (US 10.75), 8.0 mm (US 11) 4 flexible cables in different lengths: one 60 cm (24 in), two 80 cm (32 in), & one 100 cm (40 in) - Note: this length includes both the cable itself & the attached needle tips. 4 cable keys 8 end caps 1 cable connector 1 silvery white case made of vegan leather Thoughtfully packaged needle set with all the popular sizes Vibrant, size specific colours Lightweight, strong & durable needles Perfect points, flawlessly tapered - ideal for all yarns & every project Provides hours of pleasurable knitting with no hand fatigue Laser printed sizes on all needles Knit Pro Smart Stix Deluxe Set - Interchangeable Knitting Needle Circular Needles Gift For Her