HHIP TNSR16-3D Notch Style External Threading & Grooving Tool Holder ~ Right hand holder. ~ Excellent all-purpose system for threading and grooving. ~ Can be used with our right hand notch T/NT-3R #6062-5003 threading and T/NG-3 grooving inserts. ~ Clamping system draws the insert consistently back into the pocket for superior repeatability. ~ Fully interchangeable with other similar "notch" type tools and inserts. ~ Replacement clamp TNSB-3B is our # 2100-0010. ~ Replacement clamp screw is an M5 X 18. ~ Replacement shim TNSN-3A is # 2100-2214. ~ Replacement shim screw M2.5 X 8 is # 2100-0072. ~ Shim screw key T8 is #2100-0092.