Includes one N-6543 jamb and floor mount pivot bracket. N 6543 is a steel base with an adjustable self-lubricating plastic bushing One N-6673 bottom pivot. The 3/8 inch diameter plastic base houses a grooved pivot tip that screws in or out for adjustment One spring-loaded 7/8 in. diameter N-6703 top roller guide, 3/8 in. plastic base. For 1 in. 1-3/8 in. thick doors. Kenna Frame One spring-loaded 1/4 in. diameter N-6700 top pivot, 3/8 in. plastic base. Used by Alliance and many other bi-fold manufacturers One spring-loaded N-6672 bi-fold closet door top plastic pivot with 3/8 in. diameter pivot and base