These Eclipse Junior Hacksaw blades are the ideal companion for your Spear & Jackson Junior Hacksaw. Durable and effective, they suit most models of Junior Hacksaw frames, so once the blade finally wears out you can continue working. Just add in one of these replacement blades, and your hacksaw is as good as new. With 10 in the pack, your hacksaw can just keep going and going. The blades are made from hardened steel, with 14tpi, making sawing through wood a simple task. It is ideal for small general wood sawing tasks where the workpiece cannot be firmly secured. The blade is 6 inches (150mm) long so should be a snug fit for your Spear & Jackson Junior Hacksaw.