MDJNR 12-4B Turning- Profiling & Facing Tool – New Rigid Clamp Design (2012-1122) ~ Right hand. ~ 3 Degree lead angle for turning, profiling and facing. ~ Zero degree relief. ~ New rigid style top & hole clamping design provides increased stability & security for productive turning of large components and heavy machining. ~ Use with DNMG inserts. ~ Shim is #2100-1504. ~ Shim screw is #2100-4303. ~ Clamp is #2100-2902. ~ Clamp screw is #2100-4353. ~ Spring is #2100-4384. ~ Please see chart picture for sizing information.