Specification These aluminium quick release seat post clamps are fantastic value and light weight due to the CNC machined design. They have a machined out hollow lever design and a low profile sleek retaining bolt, which means they are light and solidly made. Model:MTB/fixie/road seatpost clamp Material:alloy aluminum AL6061 T6 Color:black/red 31.8mm/34.9mm seatpost clip 31.8mm road bike bicyce seatpost clamp use for 27.2mm/28.6mm seatpost 34.9mm hollow seat tube clip use for 30.4/30.8/30.9/ 31.6mm seat tube Use:MTB,mountain bike ,folding bike,track bike,fixedgear,road bike and so on package includes 1xbicycle seat tube clamp

34.9mm Bicycle Seat post clamp used for out diameter 33.5mm to 35.2mm bike frame seat tube . The "31.8", "34.9" refer to the seat post tube outer diameter not the seat post diameter!. strong sleek retaining bolts ensure it to be double sturdy and firm. Aluminum Quick Release Bike Seat Clamp. Material: Aluminum Alloy. Diameter:31.8mm and 34.9mm.Diameter refer to seat post tube diameter not the seat post.

Item Weight: 42 Grams. Style: SIMPLE. Color: Sblack34.9. Item Dimensions LxWxH: 1.37 x 1.37 x 0.51 inches. Brand: GUB. Material: Aluminum. Date First Available: July 31, 2017. Best Sellers Rank: #98,272 in Sports & Outdoors. Customer Reviews: 4.5 out of 5 stars 168 ratings 4.5 out of 5 stars. : B0754LPJML. Style: ?SIMPLE. Part Number: ?5505. Manufacturer: ?GUB. Material: ?Aluminum. Color: ?Sblack34.9. Brand Name: ?GUB. Item Weight: ?42 Grams. Item Dimensions LxWxH: ?1.37 x 1.37 x 0.51 inches. Package Weight: ?0.04 Kilograms. Item Package Dimensions L x W x H: ?4.72 x 3.78 x 0.51 inches.