Thinvik Bike Seat Post Matte Aluminum Alloy,Length 350mm,Bicycle Seat Post Replacement for BMX MTB Road&Mountain Bike,Fixed Gear Bike Seatpost 25.4/27.2/28.6/30.4/30.8/31.6mm

Note:Please do measure and confirm the exact post diameter that you need for your bike. Otherwise you may find it too small or too large for your bike frame seat post hole.Thank you for your support.
Material:6601 Aluminum alloy
Diamter:25.4 mm 27.2 mm 28.6 mm 30.4 mm 30.8mm 31.6 mm
Length:350 mm
Wall Thickness:3 mm
Color:Black
Weight:About 170 g
Is Discontinued By Manufacturer ‏ : ‎ No
Package Dimensions ‏ : ‎ 14 x 0.9 x 0.6 inches; 8.01 Ounces
Date First Available ‏ : ‎ June 28, 2021
Manufacturer ‏ : ‎ Thinvik
ASIN ‏ : ‎ B083FNN6FK

【Superb Material】Seatpost made of 6061 aluminum alloy,strong and durable.
【Use&Fit】Seatpost used for for most old style bike,and the bike saddle with clamp.
【Safe Line Mark】There is a safe line mark on the seat post. Please insert at least above the minimum safety line.
【Size-Length】350mm;Diameter:25.4mm 27.2mm 28.6mm 30.4mm 30.8mm 31.6mm;Thickness of the tube:3mm.