1/2" 2PCS SEL1212H16 + SER1212H16 Tool Holder CNC Thread Turning Holder + 2pcs 16ER/IR AG60 Carbide Threading Inserts with Wrench for Lathe Thread Tool

Good price for the product.

I have several carbide insert tools with rectangular, triangular, and diamond shaped inserts. This is my first experience with these 16ER-AG60 and 16IR-AG60 inserts and I find that they break easily compared to the other carbide insert types I have used. To be fair, yes carbide is brittle and the shape of the inserts is complex, including multiple intersecting sharp edges which will naturally be more fragile. Take my review with a grain of salt. Can't say for sure whether the brittleness is a problem with the quality or if it is just the nature of the geometry.

Needed both of these for some external threading on the old lathe and they work quite well for Chinesium tools. I don’t thread terribly often, but when I have these have worked quite well.

1/2” and 12mm are two different things. 1212 tells me it’s 12mm. 1/2 should not be mentioned in order to be most accurate. Otherwise good price.

This set 12mm shank L and R threading tools are made brilliantly clean! Surface under insert and all around is just very smooth. Inserts are sitting firmly and I can't describe how HAPPY I AM!When you hold them in hand - you enjoy....Every cent worth!

works very well as described

machinery repair

I don't know why the others are so expensive. These are great tools. I'm a retired machinist and I really like these tools. I don't know how they would be in a production setting, I just cut a few threads now and then and they work great for that. I have some Kennametal inserts and they work great in the holder but the one from Shars seem just as good.