General description vhbw offers a practical set of replacement parts consisting of 4 guide wheels and 2 pulleys designed for swimming pool robots. If the wheels of your pool robot are worn or damaged, it can lead to decreased performance, causing it to slip and clean less effectively. This replacement set allows for a quick restoration of your pool robot's performance without incurring high repair costs or experiencing long downtimes. Made from durable, chlorine-resistant plastic, these spare parts ensure a long service life. Technical specifications Dimensions of the guide wheels: External diameter: 52 mm Internal diameter: 30 mm Height: 24 mm Dimensions of the pulleys: External diameter: 51 mm Internal diameter: 16 mm Height: 27.5 mm Material: plastic / metal Colour: white Weight: 300 g Compatibility and accessories Compatible with Maytronics Dolphin POOL UP, M200, Pool IN, Hydro 40, F40, M400, M500, M250 Replacement for 3884997-R3, 3884997-R6 Installation Installation is