KDK-0 Type Quick Change Tool Post and 6 Piece Holder Set is Interchangeable with KDK-0,100, 150 and 200 tool posts. Lathe Swing: 8-12 Lock Down Bolt Diameter: 7/16. 1 – Turning and Facing, No. 2 – Threading and Facing, No. 3 – Extension Turning Bar, No. 4 – Parting Bar, No. 5 – Master Bar For Boring Bars. T-slot nut and mounting bolt not included. ” interchangeable with kdk-0,100, 150 & 200 tool posts “lathe swing: 8-12″ lock down bolt diameter: 7/16″ includes holders: no. 1 – turning & facing, no. 2 – threading & facing, no. 3 – extension turning bar, no. 4 – parting bar, no. 5 – master bar for boring bars t-slot nut & mounting bolt not included.