Improve your shower door's performance for a fraction of the cost: Basco Infinity 4400 & 4500 sliding door parts pack Bottom Guide: Help your 1/4 inch thick glass smoothly slide by replacing your bottom guide. Bottom guide gives glass panels proper spacing Vinyl Bumpers: Prevent glass door panels from hitting metal wall jambs; 4 black 1-7/16 inch bumpers for wall jamb includes screws and inserts (6) Plastic wall anchors and (6) wall jamb screws included Basco Infinity Sliding door parts pack contains: wall anchors, nylon spacer, #8 truss head screwed, bottom guide, #6 pan head screws, molded bumpers, bumper inserts, & Allen wrench