Vislon (chunky) heav duty, plastic moulded tooth. Two-Way Open End zip, with two sliders - allows zip to be opened from both top and bottom. Suitable for Jackets, Coats, Outdoor wear, Skiwear,etc The majority of our zips are manufactured by YKK Zip tooth length: 20 inch- 51cm Tooth width: 8mm - 5/16 inch