The Meghna Zoom bike dropper seat post is made of 6061 aluminum alloy, making it durable and anti-rust. With a total length of 350 mm and a diameter of 25.4 mm, it is suitable for road bikes, stationary bikes, mountain bikes, downhill bikes, track bikes, BMX, etc. Installation is easy, and there is a safety line mark on the seat post to ensure safe installation. Insert it at least above the minimum safety line when installing the new seat post.