This Prime-Line N 7263 Folding Door Hardware Kit can be used on a variety of wood bi-fold doors. Both the pivot and guide are self-adjusting, feature a top mount design, and are spring-loaded steel shafts. Includes a top pivot and a top roller guide. Provide a smooth guiding of a lead door with this combination set. To install, lightly tap the folding door hardware into the pre-drilled top mount holes. A soft mallet may be required for installation of the closet door parts. Constructed of steel housing with nylon roller guides, the bi-fold door hardware repair kit is strong, durable, and built to last. The door pivot repair kit has steel housing measuring 7/16 inches in diameter, a horizontal roller that measures 7/8 inches, and a pin set in the top pivot that measures 1/4 inches in diameter. Please refer to the line art drawing for closet door replacement parts dimensions and compare to your needs before purchasing.