The Rob Allen Drop Barb 7.5 mm speargun shaft is a heavy-duty spear for hunting large, powerful fish where maximum penetration and holding power matter. Made from spring steel hardened to 2100 MPa, it resists bending under load, and the reinforced stainless steel drop barb helps keep the fish on the shaft once it is hit. It is made in South Africa by Rob Allen, a brand known for robust, reliable spearfishing gear.
Key features
- Spring steel hardened to 2100 MPa
- Corrosion-resistant plating
- Heavy-duty tri-cut tip and quick-fit O-ring barb retainer
- Reinforced stainless steel drop barb
Specifications
- Shaft diameter: 7.5 mm
- Material: spring steel, 2100 MPa
- Lengths: 140, 150 and 160 cm
- Notches: 2 notches on 1.4 to 1.6 m shafts, 3 notches on 1.7 to 1.8 m shafts
- Country of manufacture: South Africa
How to use and care
Always check that the barb is seated correctly in the O-ring retainer and that the cord shows no fraying before every dive. After use, rinse the shaft in fresh water, dry it and inspect the plating, tip and barb.
FAQ
Will this fit my speargun?
The shaft is 7.5 mm in diameter. Check your gun’s specification for shaft diameter, length and notch type, or contact us with your model.
What does the drop barb do?
The barb is attached to the shaft by a Dyneema cord and is designed to hold large fish once the shaft has penetrated.












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