10 Pcs Heavy Duty Metal G Hooks Flat Tri-glide Hook Sildes Adjustable Fastener Belt Buckle for Strap Webbing

They sell this stuff on Amazon too. I buy buckles all the time for various straps on bags/backpacks/belts etc. Just measure the strap and get the right size buckle. Edit: https://a.co/d/cVuabut