4 Pcs Sliding Barn Door Wall Spacer Replacement Carbon Steel with Screws for Sliding Barn Door Hardware Connecting kit TRACK SPACER MATERIAL Track spacer connector picked high quality carbon steel materials to make track assemblies connecting kit heavy-duty and sturdier, whose quality is superior to other similar carbon steel rail connector on the market. TRACK SPACER SIZE Lag bolt length: 3-9/16". Track Spacer length: 1-3/8", track spacer outer diameter: 3/16", track spacer inner diameter: 3/8". TRACK SPACER BRAND INTRODUCE Perfect for sliding barn door hardware rail assembly and easy to install. Track spacer is suitable for barn door hardware in farms, garages, carriage houses, kitchens. REPLACEMENT ASSEMBLIES CONNECTING KIT DESIGN Standard round hole track spacer is used to connect rail and wall, adjustable barn door track spacer can change the distance from the door to the wall. Assemblies connecting kit with wall anchors, lag bolt can go deep into the wall more firmly, and fit for concrete and wooden wall. Package Included 4 x Track Spacers；4 x Lag Bolts；4 x Wall Anchors；4 x Washers