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CNC Precision Crafted Components. ARR produces every fin, centering ring, and bulkplate with our custom built CNC router. We individually fit each ring and bulkplate to current production. Blue Tube 2.0 sizes as a function of our quality control policy.

Ring and Bulkhead Specifications: Ring and Bulkhead sizes up to 4.0″ are cut from 6 mm Baltic Birch Plywood. 5.5″ Rings and Bulkheads are cut from 9 mm Baltic Birch Plywood. Rings and Bulkheads sizes, 6″ & 7.5″, are cut from 12mm Baltic Birch Plywood.

Endcap Style Bulkplates are currently available for Ebay Sizes 5.5, 6.0, and 7.5.

Call 360-445-2ARR for your custom cluster & hybrid rings.