Brass Rings - the rings will be tapered and will conform to the following dimensions:
- Depth : 6.4 ± 0.1 mm
- Inside diameter at bottom : 15.9 ± 0.1 mm
- Inside diameter at top : 17.5 ± 0.1 mm
- Outside diameter : 20.6 ± 0.1 mm
| Overall Dimensions in Inches (L x W x H) | 1 x 1 x 0.5 | 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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