Sash window axle pulley with square brass forend & a nylon wheel. A range of sturdy axle pulleys for sliding sash windows. Sash window axle pulleys are used in traditional rise & fall sash windows to carry the cord attached to the window counter balance sash weight. Typically you will find four in any sash window, two for the top sash & two for the bottom sash. Comes with a 10 year mechanical guarantee. Suitable for domestic use.