Material: Steel (rotating holder) + Carbide (rotating insert) Contents: 1 SER1616H16 + 10 AG60 BP010 + 1 T8 wrench Holder cutting direction: straight. Insert pitch: AG60 60° universal, machining pitch: 0.5 ~ 3.0mm. Smooth black oxidized surface on each rotating tool holder. Exquisite workmanship of the blades, high strength, high toughness, stable and durable.