Shaft diameter Φ16 mm, 70 cm. The modification is at the knurled part, which will be a Φ13.5 mm, 50 mm long 64 titanium piton. Material: Gr5 Ti-6Al-4V, commonly known as 64 titanium. The total length of the knurled part is basically 50 mm. We can accommodate other lengths and specifications, so if you have any requests, please ask via the question function. We will manufacture after the auction ends, so it will take some time after you win the bid. You can specify the diameter of the knurled part.