The boxes with the pulley allen are available with ball bearings or normal, the choice between material pulley, acetal resin, die-cast aluminium of high quality or stainless steel high load. They are suited to all types of systems, halyards, systems, line of command and general handling. The range of Low-profile includes the unique cage and retainer Allen designed to deal with high loads of modern facilities.
The lock pulleys A4808 high voltage has a function of opening rotation for better access when changing halyards, etc
Triple block with 30mm sheave from Allen. It's lightweight and strong, making it ideal for dinghies, windsurfing, kitesurfing, and anything else that uses smaller diameter blocks. Also used on the 420 as a luff block.