(Jack) Kuhn of South Gate, California. This is a Quick-Change 4-Position Bar Combination Tool Post Holder. For lathes with 18″ – 24″ swing. Only a second to change tools. Rugged – No chatter or vibration. No time wasted with shims. Safe and simple to operate. Speed your lathe operations up to 90%. For fine precision work to heavy-duty cutting. KDK-206: 4-Position Bar Combination – 3/4 Capacity. Comes exactly as shown in pictures.