HHIP 5/8" Right Hand External TKEHR10-16D Grooving & Cut-Off Holder ~ Right hand. ~ Tool holder design provides precision clamping & insert indexing accuracy. ~ Ideal for external grooving, turning, part-off, profiling and adding a relief. ~ Use with TKF16R Inserts 6061,1016, 6061-1020 or 6061-1024. ~ Replacement screw is an M4 X 9. ~ Key is a T15 #2100-0095.