This wood chuck set for 95 mm (3.75 inches) is a mechanical device used to clamp a workpiece on a machine tool. Made of steel, the set is durable and sturdy. As a machine tool accessory, it uses the radial movement of movable jaws evenly distributed on the chuck to clamp and position the workpiece. This wood lathe chuck set includes a 4 jaw self-centering chuck and interchangeable jaws for spindles, bowls, and work-pieces that are hard to be secured. The set will fit 1" x 8 TPI spindle.