HHIP 6 Piece KDK Style 100 Quick Change Tool Post & Holder Set ~ Interchangeable with KDK-100 Series. ~ All working parts hardened and ground. ~ Lathe Swing: 12-16" ~ 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 ~ Also includes a KDK-100 style tool post body. ~ T-slot nut & mounting bolt not included. ~ Center height is 1.000" & up.