Combination set of the bottom pivot and bottom/top guide typically used on several wood bi-fold doors. They are both set a in 3/8 inch diameter plastic housing. The bottom pivot has a tapered grooved tip that fits into the N 6674 bottom pivot bracket. The 3/8 inch guide is may be used as either the guide pin or as a top pivot depending on the bi-fold door design. To install, lightly tap them into the pre-drilled top mount holes. Used by many bi-fold door manufacturers.