Blackburn Interlock Lockable Rear Rack 2.0The Blackburn Interlock Rear Rack is crafted from Aircraft grade 6061 Aluminum tubing and has a light and reflector mounting loop for extra visibility. The Blackburn Fit System is compatible with most 26’’, 700c, and most 29er wheels disc or non disc bikes. Works with most panniers and trunk bags but designed for Blackburn Interlock compatible bags. Has a 45lbs or 20.5kg carrying capacity. Combonation Lock.768686677946