Singer Ultra Sponge Bar for Bulky Gauge Knitting Machines Made in the USA Fits bulky gauge Singer, Silver Reed, Studio, Knitmaster, and Empisal Knitting Machines High quality, medium density foam sandwhiched between two durable layers of fabric (no metal bar) Lasts 3-5 years with normal, domestic use Dimensions: 43.5 (103 cm) (L) x 3/8 (1 cm) (W) x 1/2 (1.3 cm) (H)