Looking for a compact device that delivers great results? Whether creating edge, corner or surface joints, the JointMaster™ from Milescraft is an adaptable jig that adapts to any woodworking project. All metal construction means the jig will not bend or bend or bend when boards are joined. This creates stronger and more consistent joints. The JointMaster™ comes with three drill blocks and is capable of creating joints with the most common dowel pin sizes: 1/4", 5/16", and 3/in. Each hardened steel drill block is adjustable to accept and align centered dowel holes on boards from 1/2" to 3". Built in scales help align and center your dowels. The convenient centering markings ensure your holes are where you want them. If you use standard 1/2", 2.3", 3/4" or 7/8" boards, three included spacers automatically align the drill blocks and help you choose the appropriate dowel size. To eliminate alignment problems, the JointMaster has built-in edge stops. Simply lower the boards, tighten and put on to ensure both boards have their dowel holes in the same position for a solid connection. When creating surface joints, the three dowel alignment slots help you transfer the edge dowel position to the surface of your board with ease. The JointMaster™s self-clamping design means no additional clamps are required to complete your project. The clamp can be moved from the main body to the clamping wall to create different joints. If necessary, the clamp body can be removed according to your project needs and use your own clamping solution. If you need professional quality joint work, make sure the Milescraft JointMaster is part of your tool arsenal. Milescraft Always the better idea.