Check the listing for details. Boring Bar Lathe Internal Threading Inserts 5pcs 16ER +5pcs 16IR Carbide Inserts. Condition: New. Listed at 33.90 USD. Product Description ----------SER1616H16 1. Shank Diameter : 0.63" / 16*16mm / 5/8inch 2. Total length : 3.94"/100mm 3. Screw : M3.5*12 4. Wrench：T15 5. Insert : 16ER AG60 6. Cutting direction : right The pitch that the insert can process : 0.5mm~3.0mm ----------SNR0013M16 1. Shank Diameter : 0.51" / 13mm/ 1/2inch 2. Total length : 5.90"/150mm 3. Screw : M3.5*9 4. Wrench：T15 5. Insert : 16IR AG60 6. Cutting direction : right The pitch that the insert can process : 0.5mm~3.0mm Package: 1pc SNR0013M16 (Boring Bar) 1pc SER1616H16 (Threading Turning Holder) 5pcs 16ER AG60 (Threading Inserts) 5pcs 16IR AG60 (Carbide Inserts) 2pcs wrenchs If you need more Carbide inserts 16ER AG60 ,please search 【ASIN：B07RB5BKG7】,16IR AG60【ASIN：B07S1WSNJ6】