• Tapered diameter, thin inside, thicker outside. 
• Micro-diamond pattern with waffle style at the center. 
• Locking is provided with a single inside collar.
• The pair are just above 100 grams. 
• No flange.

Specifications: 

• 135mm total length.
• 29.5mm inside. 33.9mm outside diameter. 
• 102 grams (3.6 ounces).