Cat parts are manufactured to precise specifications and are built for durability, reliability, productivity, less environmental impact, and reuse Mount Type: Mushroom Mount Overall Length (mm): 63 Overall Length (in): 2.48 Sleeve Length (mm): 50.8 Sleeve Length (in): 2 Head Outside Diameter (mm): 95 Head Outside Diameter (in): 0.147 Pilot Outside Diameter (mm): 56.6 Pilot Outside Diameter (in): 2.23 Inside Diameter (mm): 20.4 Inside Diameter (in): 0.8 Standard Bolt Size: M20