Here is one UNIQUE speargun tip for spearfishing. The unique part of this tip is that the insert, look like nail, is made out of the toughest steel and almost unbreakable. I use them around rocky bottoms and it never fails on me. You can use it on any spear for band or pneumatic spear gun as long as spear threads are 6 mm. + One spare nail in the set to the tip.

Package Quantity: Section- 3 pcs, threads 6 mm, length 1.9 feet (58 cm)) Slip Tip  - threads 6 mm, length 14,2" (36 cm) Power band length 47" (120 cm), latex in blue rubber sheath (external diameter 9 mm, internal diameter 5 mm) Two clips is the key for twisting the thread with effort • Material of the tip of pole - stainless steel (stainless tube  diameter 10 mm , wall thickness 1.5 mm). • Overall length: 7 foot (214 cm). • Thread: M6 X 1.  • Weight approx.: 750 grams (weight in water approximately 600 grams). • diameter pole: 10 mm.