Slater Tools' Rotary Broaching Attachment is synchronized (1:1 ratio) with the spindle by means of a spline shaft and pick-off gear. This attachment has several advantages. First, it eliminates any twisting of the form and skidding on the work piece chamfer. It also increases the broach tool life and much deeper forms can be obtained. Slater Tools offers a variety of attachment sizes for internal and external work. This attachment is available for use on a variety of multi-spindle machines including Acme, New Britain, Greenlee, Cone, Warner Swasey, and Tornos Bechler.