Allows half turn on or off for your stabilizers. Ideal for smaller 5/8” diameter aluminum tube stabilizers and carbon rod stabilizers.Won’t vibrate loose; simple to use. “Idiot-proof” one-way stainless steel connector pin locks into ¾” diameter 6061 machined aluminum housing. Ideal for small aluminum tube stabilizers and carbon tube stabilizers. Includes mounting screw and nylon washer.