#10 Coil Zipper is 3/8" across the closed coil
Across total tape & coil is 2"
Short pulls: auto-lock body with 1-3/8" pull
Long pulls: non locking body with 2" pull
REVERSE pulls: runs on the back of the zipper for water proof coil
Coil is nylon, Tape is polyester
Use this zipper on large tents, messenger bags, tarps.
If you are replacing a zipper in a back-packing tent, use #5 or #8. #10 zipper is too heavy.
Making boat cushions? Use #5 coil zipper.