This is the OMER Black Nylon Multi-Prong Steel Point Available in 3, 4 and 5 Point Prong Features: OMER POINTS Manufactured with heat treated AISI420B steel Similar design to the original Mustad points Hardness of 180Kg/mm2 Polymer base, made in elastomerized PA66 Hydrodynamic design Reinforcements in the areas around the metal points 30mm of the shaft is inserted in the base of the multiprongs, greatly increasing mechanical resistance and linearity between the multiprongs and the shaft Back in 1967 Omersub invented and patented the first 3 and 5 metal points multiprongs with a polymer base (Pat. N. 113016 Dated Feb. 14 th 1967). In the early 70&';s we were already using Mustad points and, it was not long after, that everyone else on the market was copying these revolutionary products. Omersub Triflex" and "Pentaflex" multiprongs introduced a new way of spearfishing with multiprongs, making it as technical as spearfishing with Tahitian shafts. Omersub&';s new line of multiprongs features 6 different models featuring a new design of the polymer base and of the metal points. "