Headpost collar isolates dissimilar metals to prevent corrosion. Collar accepts set screw that fixes shackle in one direction or allows it to swivel.
Specifications:
| Length (mm) | 14 mm |
| Length (in) | 9/16 in |
| Width (mm) | 19 mm |
| Width (in) | 3/4 in |
| Weight (g) | 0.28 g |
| Weight (oz) | 0.01 oz |
