Quick answer: This is a piece of dive hardware from Scubapro.
Buckles, snaps, clips and rings are the small parts that hold a rig together. Good hardware keeps your gear secure and streamlined, and it's worth getting right on a rig that's carrying more weight.
Check the size, material and webbing width so it matches your harness, strap or gear. Read How Smart Accessories Improve Every Dive Trip. More options: Dive Accessories.