Rolltrak Replacement Roller 36mm SKU: 210387 MODEL: R4131 Error. try again later You've successfully joined the club $ 22 .36 each Mitre 10 SAvailable at selected stores. Check your local store for details Variants Sliding screen or security screen door fitting. Features and benefits Diameter: 36mm. Axle: 5.5mm. Load: 25kg.