- OBD Rubber Rings come in a pack of 20
- PVC cover for your rubber band constrictor ties
- Provides a professional finishing touch to your DIY speargun rubbers
- Covers unslightly knots and line ends for a smooth finish
- Protects against UV degradation of ties
- Slide onto rubber prior to tying, then slide over ties
- Shrink to a tight fit with a heat gun (or hair dryer)
- Black rings fit rubber of diameters approximately 16mm to 19mm
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