• These injectors are 5/16" x 18" heat treated 17-4 ph stainless steel injector rods made to replace your old/bent injector for your Neritic Polespears, Black Reef Co Polespears, Billfish Republic Polespears or any polespears that use an 8mm or 24# thread
• The predecessor to the old Showstopper Slip tip, Headhunter Spearfishing has made the tip stronger with even better seating on the injector for less wobble and better penetration power