Rolltrak Glass Door Replacement Roller 36mm SKU: 210376 MODEL: R4050 Error. try again later You've successfully joined the club $ 19 .47 each Mitre 10 SAvailable at selected stores. Check your local store for details Variants Bearing acetal grooved roller. Features and benefits Diameter: 36mm. Bore: 6.4mm. Load: 30kg each roller.