Flat four-sided trident

Trident 4 flat face. teeth 20 cm length. The thread 7 mm. Tips in this series are made of corrosion-resistant steel 40X13. Quenched in salt bath, followed by tempering. The hardness of HRC 48-50 ... Heat treatment gives the properties of the cutting face to keep grinding, and the body of the tip to withstand heavy loads and bending fracture. Subsequent tempering relieves stress relieving a metal from its excessive brittleness. Landing on the body of the harpoon almost completely removes the load from the threaded connection. Maximum penetration capability tips reached the optimum angle of attack sting. The petals have an original shape and not sticky even when hit. Dense, symmetrical tip axis petals fit allows you to shoot at even long distances without fear of withdrawal of the spear aside.