ABUS Pro Amparo 4750SL R Frame Lock - BlackEASY TO USE: This retractable lock swiftly secures your two wheeler against misuse, be it a road or mountain bike in the R version, the key stays in the lock when open ENHANCED SECURITY: For added defence, you can insert additional security devices into the extra lock housing, such as the ABUS frame lock chain or the ACL 12 105 adaptor cable SIMPLE INSTALLATION: Use the provided bolts to secure the spoke lock to the rear triangle. If there are no