• Machined AL6061 alloy construction
• Center sleeve for use with Revolvr outboard bottom brackets
• Converts 68/73mm outboard bottom bracket to a 100mm or 120mm fat bike model
• Seals and protects the bearings from harmful contaminants
• Center sleeve only - Revolvr outboard bottom brackets sold separately

Length: 100mm, 120mm   
Cup Material: AL6061