The IST FB1 304 Stainless Steel Buckle for Rubber Rocket Fins is a replacement part for the buckle used on IST F1 Rubber Rocket fins.
Constructed of corrosion-resistant 304 stainless steel with TIG welding for strength. The interior sliding bar holds fin strap securely.
Keep some spares in your save a dive kit to be ready for lost buckle emergencies.