This clutch is printed from Carbon Fiber material and is combined with a steel QD swivel stuff that is threaded and bound to the clutch using two M6 set screws that thread direct into the QD swivel stud. This allows you to get a solid firm purchase on the clutch and keep your rifle where it needs to be on the barricade. The part also has an integrated button that allows you to actuate the QD swivel stud without removing the clutch from the swivel stud!