Hubbard Jointer Company produces high quality masonry hand tools for the professional bricklayer and mason. Our Brick Jointers and Sled Runners and Know Our New Leather Pouch allow for complete versatility on the job. They are designed with interchangeable, replaceable, hardened tubular steel blades available in four diameters which can be exchanged to adapt to joint size requirements. Wear is distributed during use by simply revolving the tubular steel blade. Should a blade eventually wear out, it is removed and a replacement installed on the cast aluminum handle. The hardened tubular steel blades on both the Brick Jointers and Sled Runners produce a uniform and consistently fine finish on the mortar. No Tools Needed: Replace the worn blade by removing it and screwing on a replacement. Distribute wear during use by continuing to turn the blade. Each Hubbard Jointer is individually packaged pre-assembled with one 7/8" and one 3/4" blade. The package also includes one 5/8" diameter blade and one 1/2" diameter blade.