These 25mm (1") nylon ladder lock buckles are ideal for backpacks.
Ladder lock slider buckle 25mm (1″) - Serial Bagmakers
Serial Bagmakers Hardware – Sew Hot
Heavy Duty Ladder Lock
Serial Bagmakers Hardware – Sew Hot
Tension Lock Material:Plastic Ladder Slider Color:Black Adjustable Buckle Size:For Webbing size 3/4 inch/20mm or less.
20pcs Plastic Ladder Slider - Tension Locks Adjustable Buckle Black For Webbing Backpack Belt Straps Camping Suitcase (20mm) Q085
EXTEMPORE 10 Pcs 1 inch (25mm) Plastic Ladder Slider adjustable Lock Buckles, Plastic tension lock triglide, Plastic Replacement for Belt backpack strap adjuster replacement (Black), Black, Medium : : Home
KEEJEA 12 Pack 1 inch Plastic Ladder Slider Adjust Lock Buckles for Backpack Straps 25mm Webbing : Arts, Crafts & Sewing
Rings, Buckles & Sliders - Serial Bagmakers
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Metal Buckle Ladder Lock 1.5”(3.8mm) Backpack Handbag Buckle Replacement Slider Strap Adjuster Webbing Release Buckles Hardware 3 Color-6 PCS
BOSWOAK Ladder Lock Slider,Heavy Duty Plastic Ladderlock Slider Adjustable Lock Ladder Slide Buckle Adjuster for Backpack, Black, 0.75in,1in,1.25in,1.5in,2inch : : Tools & Home Improvement