When used with the SK-280 main unit, you can easily knit even difficult rib stitches. You can enjoy various patterned knitting using double knitting and punch cards. *Please note that the Rib Knitter (SRP60N) cannot be used alone. This product is used in conjunction with the separately sold SK-280 main unit. Product Specifications Body Size: Width 1110 x Depth 180 x Height 95 (mm) Needle Pitch: 4.5mm Number of Needles: 200 Weight: 6.3kg Usable Yarn: Fine to Bulky