This mountain bike crankset features a hollow integrated chainring with 32, 34, 36, and 38T options. Made from durable aluminum alloy, it has a size of 170mm and is suitable for mountain bikes. The crankset has a positive and negative tooth design, is durable and high strength, and has undergone CNC aluminum alloy chainring T6 heat treatment and laser engraving surface treatment. It has advantages such as being ultra-light, having high strength and rigidity, and being easy to install with a low-maintenance integrated design.