BMC Twin Air Conical Air Filter, Connection 65mm, Length 150mm, 15° Quattro 20v Inner diameter 1 (mm): 60 Inner diameter 1 (mm): 60 mm Inner diameter 2 (mm): 25 mm Inner diameter 1 (inch): 2 3 8 inch Inner diameter 2 (inch): 1 inch Length: 100 mm Color: Black Wall thickness: 5 mm Temperature range: 40 to +180 degreeC Outer diameter 1: 70 mm Outer diameter 2: 35 mm Reinforcement: 4 layers Material: High quality silicone rubber polyester fabric Inner diameter 1 (mm): 54 mm Inner diameter 2 (mm): 63 mm Inner diameter 1 (inch): 2 1 8 inch Inner diameter 2 (inch): 2 1 2 inch Length: 100 mm Color: Blue Wall thickness: 5 mm Temperature range: 40 to +180 degreeC Outer diameter 1: 64 mm Outer diameter 2: 73 mm Reinforcement: 4 layers Material: High quality silicone rubber polyester fabric