Pulley Blocks, Plastic, Economical

An Economical Set Of Pulleys For Experiments With Light To Moderate Loads. Incorporating 50Mm Diameter Plastic Pulleys Carried In Tough Plastic Frames On Free Running Central Axles. The Blocks Are Available In Single, Double Sheave And Triple Sheave. The Central Axle Pin Can Be Conveniently Removed From The Frame, Providing Easy Disassembly. A Simple Locking System Prevents The Axle Pin From Accidentally Coming Out. All Blocks Have A Hook At Either End. Over All Length Of Frames Is About 90Mm. Pulley Configurations: (Double Sheave (Parallel) )