Knitting Needles Set Various Sizes Available Detachable Circular Interchangeable Knitting Needles Crochet Kit for Gift Item Type: Knitting Needles Set Product Material: Plastic, Aluminum Specifications: 1 Set Product Use: Household, Weaving, Etc. Scope of Application: Most People of School Age Thick Circular Needle Size: Approx. 6.0mm / 0.24in, Approx. 7.0mm / 0.28in, Approx. 8.0mm / 0.31in, Approx. 9.0mm / 0.35in, Approx. 10.00mm / 0.39in Thin Circular Needle Size: Approx. 3.0mm / 0.12in, Approx. 3.25mm / 0.13in, Approx. 3.5mm / 0.14in, Approx. 3.75mm / 0.15in, Approx. 4.0mm / 0.16in, Approx. 4.5mm / 0.18in, Approx. 5.0mm / 0.20in, Approx. 5.5mm / 0.22in Adapter Length: Approx. 40cm / 15.7in, Approx. 60cm / 23.6in, Approx. 80cm / 31.5in, Approx. 100cm / 39.4in