YKK Open End Zip - Black Metal Tooth/Finish - Heavy Duty - Hd-3 - 6/7/8/9/11/16/17/18/19/20/21/22/23/24/25/26/27/28/29/30/31/32/33/34/35/36/37/38/39/40 Inch (8 Inch (20 Cm)) Black YKK, OPEN ENDED, HEAVY DUTY ZIP BLACK TAPE AND BLACK METAL FINISH (BLACK METAL TEETH/HEAD) HUGE SIZE RANGE MULTI PURPOSE ZIP