Spring-Loaded Pull Action Pin Latch: choice of 2 Handle Types & Pin Lengths These pin latches are used in a variety of applications, and are often used to adjust positions of a telescoping horse trailer divider.The stainless steel pin/bolt is fully retractable by lifting the knob or ring, and can be re-adjusted & inserted into different 3/8" diameter holes. The main body including threaded area is 1 1/2" long. SLPAPLR: Aluminum body w/ stainless steel bolt & pull ring. 1 inch diameter HD SPLIT RING handle. 1/2" pin length SLPAPLK: Aluminum body w/ plastic knob pull & stainless steel bolt. 1" inch diameter PLASTIC KNOB handle. 3/8" pin length.Threaded area: 1/2" vertical screw area X .875 wide. Thread: 3/4-16. Pull action will pull the pin all the way inside the body of the latch.