Silicone Hose Black 2 - 2,125'' (51-54mm) Black silicone hose reducer. A straight hose with different inner diameter in both ends suitable for pressure or suction applications, for example between turbocharger and intercooler or between turbocharger and air filter. Also suitable for cooling systems.   Inner diameter 1 (mm): 51 mm Inner diameter 2 (mm): 54 mm Inner diameter 1 (inch): 2 " Inner diameter 2 (inch): 2 1/8 " Length: 100 mm Color: Black Wall thickness: 5 mm Temperature range: -40 to +180 °C Outer diameter 1: 61 mm Outer diameter 2: 64 mm Reinforcement: 4 layers Material: High quality silicone rubber / polyester fabric.