Sliding window roller - originally made as a DR344/143 roller and carriage by Doric. PRINTED ON DEMAND product not held in stock - contact the team for current 3D printing lead time Discontinued stock in 2023 3D printed carriage by Mr Windows Carriage modified to receive DR13 roller our SKU 6312 Sold singly (carriage and roller) Dimensions: Carriage: 35.87mm long x 7.18mm/15.30mm high x 10.22mm wide x Roller: 16.5mm Diameter x 6mm Wide Axle: diameter 2.9mm (shaft 4.7mm) x 8.98mm Long NOTES: Carriage design modified to receive SKU 6312, this roller will not fit the original carriage **PRINTED ON DEMAND please note this item is not in stock on the shelf at Mr Windows. You are placing a back order so that you order is triggered for the part/s to be printed on demand by us. Contact the team if you have queries - average lead time for print on demand products is around 5-7 business days to be produced.**