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Feature

Use this seatpost sleeve adapter ring, you can use 30.4/30.8/31.6mm seatpost on your 27.2mm bike seatpost.
Can be converted to 27.2 seatpost diameter of 30.4 or 30.8 or 31.6 diameter, just this little accessories can save money to buy a seat tube...
Inner diameter is 27.2mm/1.07inch, 3 type of outer diameter to choose.
Suit for MTB bike, mountain bike, road bike etc.
Material: Aluminum alloy. Inner diameter: 27.2mm/1.07inch Outer diameter: 30.4mm/1.20inch; 30.8mm/1.21inch; 31.6mm/1.24inch ;Length: app.6cm/2.36inch.

Description

Features: 1.Inner diameter is 27.2mm/1.07inch, 3 type of outer diameter to choose. 2.Use this seatpost sleeve adapter ring, you can use 30.4/30.8/31.6mm seatpost on your 27.2mm bike seatpost. 3.Can be converted to 27.2 seatpost diameter of 30.4 or 30.8 or 31.6 diameter, just this little accessories can save money to buy a seat tube. 4.Suit for MTB bike, mountain bike, road bike etc. 5.Please check your bike frame seat tube outside diameter. measure the inside diameter of your old clamp.Or measure the outside diameter of your seat tube (on your bike frame). then make a right choice. Specification: Material: Aluminum alloy Inner diameter: 27.2mm/1.07inch Outer diameter: 30.4mm/1.20inch; 30.8mm/1.21inch; 31.6mm/1.24inch Length: app.6cm/2.36inch(Optional) Color: Black Quantity: 1 Pc Note: 1.Transition: 1cm=10mm=0.39inch 2.Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid. Package includes(Without real package): 1 x Seat Post Tube Warm tips: 1.We suggest our customers buying it very soon of your planned use. 2.Any problem of this product once reaches you,please contact us asap,we will solve it for you.