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Total Sheath Length (including ring): 3.7 inches (95 mm)
Ring Length: 1.18 inches (30 mm)
Sheath Length: 2.53 inches (65 mm)
Tube Diameter: 1.30 inches (33 mm)
Number of Air Holes: 7
Minimum Silicone Thickness: 0.15 inches (4 mm)
Ring is the size Inside diameter 40 mm, 45 mm and 50 mm . one cage comes with one ring .
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