This is a set of two 64 titanium piton shafts with a shaft diameter of Φ15mm and a length of 30cm. The knurled section is approximately 55mm long. The material is Gr5 Ti-6Al-4V, commonly known as 64 titanium. Other lengths and specifications are available. Please ask via the question function if you have any requests. Other sizes can also be ordered. Please inquire via comments.