Knit-Trax Plain #000 Ultra Thin Retraction Cord, 100"/Bottle. 100% cotton cord is knitted into interlocking chains to facilitate easy packing of cord into sulcus. Provides a complete view of the margin. Made with 100% absorbent cotton. Strands expand after packing. Braided to prevent unnecessary bloodloss. KnitTrax is used by dentists to get full exposure of the margin before creating an impression. The cord is made using absorbent 100% cotton material that adapts easily to the sulcus, allowing for use in all retraction techniques.All KnitTrax products are specially knitted for added thickness to achieve better retraction and improved hemostatic control by expanding after packing. Each pack contains 100 inches of cord.