Use the Prime-Line N 7535 Folding Door Hardware Kit to replace damaged or missing folding door hardware to restore the doors to their optimal performance. This bi-fold door hardware repair kit is constructed of plastic and steel components that fit 3/8 inch diameter holes. The door pivot repair kit includes one N-6611 top roller guide with a 3/4 inch plastic wheel, one N-6614 top roller guide with a 7/8 inch plastic wheel, one N-6612 top pivot with a 1/4 inch steel pivot, and one N-6613 bottom pivot with a 1/4 inch steel pivot. All are nail-down style with nails provided, and all except for the N-6613 bottom pivot are spring-loaded components. These closet door parts are used on bi-fold doors made by many manufactures. Use on doors 1 to 1-3/8 inches thick and up to 30 lbs. For further dimensional information on the closet door replacement parts, please see the line drawing