1. Material: rubber + iron
2. Small size: 5.5x11.7mm; suitable for nails/circular air holes with a diameter less than 3mm
3. Large size: 14x7mm; suitable for nails/circular air holes with a diameter less than 5mm
4. Good airtightness, natural rubber wrapped surface, long service life, strong and elastic
5. The nails use mechanized rapid glue dripping technology, so uneven surface wrapping is normal and does not affect normal use. It has a wide range of applications
6. The screws are sandblasted and roughened. Special technology is used to cold-flow the metal and rubber into one, with high elasticity, strong toughness, and strong and not easy to fall off
7. The cross slot at the tail is more consistent with the screwdriver
8. Deepened thread + special glue, not easy to debond, high toughness, and easier to plug leaks