DescriptionAre you looking for a professional, yet affordable seat post tube? Are you in search of a sturdy, trustworthy tool that can do multiple jobs at once? If yes, look no further! Our professional seat post tube must meet you needs. It is one of the best choices for you.Features- Brand: Clispeed. - Color: Black. - Material: Aluminum alloy. - Size: 3 x 5.9 cm/1.2 x 2.3 in. - Mountain Bike Seatpost Seat tube Reducing sleeve 27.2 turn 30.9mm. - This is a lightweight seatpost shim. It is used to make your seatpost fit into your oversized seat tube. - At this point will be reduced casing installed to the installation of the installation of the aperture - Made from machined aluminium alloy material, thick, rustproof and durable. - Suitable for MTB bike, mountain bike, road bike etc.