Combination of two versatile materials - light bodied carbon fiber & sharp brass tips - is guaranteed to provide an unparalleled knitting experience!! No other knitting needle comes closer to this! Carbon fiber is one of the most versatile materials used in manufacture of the new generation aircraft, space ship, automobiles, etc.! Shiny, smooth brass tips comes in perfect points, flawlessly tapered - Ideal for all types of yarns and for every project.. The needles have high tensile strength, are light weight with lot of flexibility. Surface made of carbon fiber helps the stitches move smoothly on the needle! Warm to touch & gentle in the hand. Easy to connect cord with a smooth join that enables easy stitch glide and no snagging. The size range from US 2.5 (1.50mm) to US 10 (6.00mm) are ideal for lace knitting, sock knitting, etc.Karbonz Interchangeable Midi Set An ideal Set for any knitter - beginner or experienced Set Contents: 4 Knitting Needle tips: US 7 (4.5 mm), US 8 (5.0 mm), US 9 (5.5 mm), US 10 (6.0 mm) in Clear Vinyl Case containing 2 Cords: 24" (60 cm) & 32" (80 cm) 4 End caps 2 Cord keys.