The entire tape measures just over 9 in length with 8 of teeth. The zipper is a #5, which equates to a 5 mm width of the closed teeth. These are
Zipper - Wikipedia
YKK® #8 Molded 2-Way Heavy Separating Zippers
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Types of Zippers : r/arcteryx
Lenzip Big Zip #15 Super Huge Heavy Duty Plastic Zipper