[ ENGINEERED TO ENDURE ] : This clamps are made of alloy and have been engineered for durability. It can take the daily conditions of biking. [ LIGHTWEIGHT, HEAVY-DUTY ] : The seatpost collar only weights less than 50 grams. But once installed, it will tighten securely around your seatpost without slipping. [ EASY INSTALLATION ] : Simply use an allen wrench to replace your old seatpost clamp with this bicycle clamp. There are three mounting screws included. ***[ 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) . [ 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.

Item Weight: 50 Grams. Style: Modern. Color: Black. Brand: Vincita. Material: Aluminum. Date First Available: November 15, 2018. Best Sellers Rank: #62,502 in Sports & Outdoors. Customer Reviews: 4.2 out of 5 stars 56 ratings 4.2 out of 5 stars. : B07KLQJ23D. Skill Level: ?Beginner. Sport Type: ?BMX. Size: ?For seatpost diameter: 27.2mm. Style: ?Modern. Part Number: ?8858998209453. Manufacturer: ?VINCITA. Suggested Users: ?Unisex. Material: ?Aluminum. Color: ?Black. Brand Name: ?Vincita. Item Weight: ?50 Grams. Package Weight: ?0.04 Kilograms. Item Package Dimensions L x W x H: ?2.6 x 1.61 x 0.67 inches.