The BlackRapid FR-5 Fasten R is compatible with all Breathe Series straps and made with durable stainless steel with over-moulded nylon to fit standard tripod-mount camera holes. This fastener screws into any standard tripod-mount hole on the base of your camera to ensure an extremely secure hold. It's great to have as a spare or replacement part. The FR-5 is manufactured out of nylon over-moulded rubber with a stainless steel thread and features a rubber washer for added security. Compatible with any camera with a standard tripod-mount hole.