Price: £22.15 from Rapid Online Rapid Electronics Ltd.
Bench Mounting Pulleys - Rapid PH10320, An aluminium pulley, 70mm in diameter mounted in a metal bracket with two clamping screws for bench and rod support respectively. Rapid Vertical Pulley on Clamp
Bench Mounting Pulleys - Rapid PH10322, An aluminium pulley, 50mm in diameter, mounted in a metal frame for clamping to a board or bench up to 25mm thick. Rapid Horizontal Bench Mounting Pulley - Diameter 50mm
Deluxe Pulley Blocks - Rapid P10308/7, A double plastic pulley with wide grooves, mounted in a tough, unbreakable plastic frame. Rapid Pulley Block - Deluxe Double - Wheel Diameter 50mm