Rolltrak Shower Screen Replacement Roller 19mm SKU: 210399 MODEL: R4340 Error. try again later You've successfully joined the club $ 8 .48 each Available on orders $50 to $1500. More info × Mitre 10 Variants Bearing acetal convex roller with threaded metal hub. Features and benefits Diameter: 19mm. Load: 8kg. Suits shower screen and some wardrobe and screen doors.