The Funn Block Pass Seat Post, sized at 30.9 x 400mm, is crafted from lightweight AL6061 aluminum with a bead-blasted finish for enhanced strength. It offers adjustable setback options of 15mm, 20mm, and 25mm, allowing for precise saddle positioning to improve riding comfort. The design is straightforward, featuring a single oversized bolt for easy adjustments. This seat post is ideal for mountain bikers who prioritize both functionality and durability, providing reliable performance and a customizable fit.