Securely aligning and adjoining objects is what these ring, l-handle, and t-handle, shoulder style detent pins from JBF National are designed and tested to do. The pin shafts are manufactured from the highest quality zinc plated steel or stainless steel. The spring loaded ball bearings these detent pins feature prevent accidental disengagement, with the shoulder providing positive stop alignment. Variety of grip lengths and pin diameters available. Add R," "L," or "T" to part number end to specify handle type."