Circular Thread Rolling Dies. Flat Thread Rolling Dies with ground thread profile. Knurling rolling Dies, Diamond knurl rollers Straight serration rolls, spline rolls, Gear Grinding. Precision Lead Screw with nut. Thread ground worm shaft (Single Multi start). Precision Internal Thread Ground lock nuts. Internal Thread Grinding & External Thread Grinding. Precision Ground Spur / helical gear. Precision spindles with thread grinding. Special and non standard taps. Serration cutters and thread form crushers. Core Inserts.