The release button on this heavy-duty swivel is engineered to sit flush to the swivel body, virtually eliminating the chance for errant release of the swivel. Military Grade Non-Reflective Manganese Phosphate Finish for prolonged durability. Designed to work with industry standard Full Rotation, Limited Rotation and Non-Rotating Quick Detach (QD) Bases. Compatible with MASH Hooks, HK Style Clash Hooks and Wire or Paracord Loops.