Vincita Rack Mount Seatpost Clamp - for Bike without Rear Rack Threaded Hole Fixation - Suitable with Seatpost Diameter 31.8 mm (Seatpost Tube 34.9 mm) - Lightweight -mountain, Road, Folding Bicycle. - 8858998209460

• [ SOLUTION FOR BIKE WITHOUT REAR RACK THREADED EYELETS ] : You can now mount a rear carrier with any bikes with Vincita seatpost clamp with rack mounts. It adds two M5 rear threaded eyelets to the seatpost. These eyelets can be fixation point for bike rear carrier. [ MEASURE DIAMETER OF SEATPOST (NOT SEAT TUBE) BEFORE PURCHASE] : Our bike seatpost adapter is available in 2 seatpost sizes. Seatpost Diameter 27.2 mm ( Seatpost Tube 31.8 mm) and Seatpost Diameter 31.8 mm ( Seatpost Tube 34.9 mm) . *** Please measure your seatpost and seat tube before purchasing*** [ EASY INSTALLATION ] : Simply use an allen wrench to replace your old seatpost clamp with this bicycle clamp. There are three mounting screws included. The recommended tightening specification is 5 Nm (Newton metre). [ LIGHTWEIGHT, HEAVY-DUTY ] : The seatpost collar only weights less than 50 grams. But once installed, it will tighten securely around your seatpost without slipping. [ ENGINEERED TO ENDURE ] : This clamps are made of alloy and have been engineered for durability. It can take the daily conditions of biking.