Check the listing for details. Topeak DF Duo Fixer Mount - Saddle Rail Accessory Mount. Color: Black, Condition: New with tags. Listed at 8.95 USD. A saddle rail fixer that allows fast and easy tool-free mounting and removal of two separate accessories that are QuickClick equipped underneath the saddle cleanly and securely. Duo Fixer system allows to mount Topeak QuickClick saddle bags or most strap type saddle bags and provides dual use with Topeak Duo Fixer system accessories, including Tubi tools, CO2 inflators, lights, and fenders. A simple slide and click is all it takes to go on a safe and secure ride.Allows lights to be mounted above fenders or bags, or multiple other combinations of items. Compatible with steel, CroMo, titanium, and carbon standard saddle rails with 36mm width spacing and at least 30mm height spacing. Not compatible with monorail or spring type saddle rails. Compatible with QuickClick saddle bags, or most SHIPS TODAY! Order before 1:30PM EST, M - F, and this item ships the same day! HAVE A QUESTION?Expert customer service by bike experts! A Real Brick And Mortar Retail Bicycle Shop with people you can talk to! Contact Us! (9-5 Mon-Fri, 12-4 Sat & Sun EST) Chat With Us