No parts to break; simply attach the hook to one end and pull the cord with the other. Release with the thumb hole! Quick, easy and high quality. Made in the USA of high strength thermo plastic, Delrin® with 1/4″ solid braid polyester rope. The rated capacity is 225lbs break strength with 75lbs of working load capacity. Comes with one gated and one triangular hook. Patented internationally. 2 per package.