Seat height measurement tool compatible with Campagnolo Ultra Torque 11-speed cranks. Although compatibility with other speeds hasn't been confirmed, it might work with 12-speed or 13-speed if the dimensions below match (we can potentially make one if you provide the actual measurements). * Compatible with Shinwa Sokutei's Arusuke model number 65544 * Please prepare the above scale separately * The crank axle section is made with 24.7mm (outer) and 19.8mm (inner) dimensions * Shipped as-is from the 3D printer; please handle any minor finishing, such as removing burrs, yourself (support material will be removed) * We can discuss creating one if you provide the crank axle hole size for Campagnolo or other speed cranks * The filament material used is PLA Thank you for considering this product.