Description: Made of Nylon66 material, durable, with good corrosion resistant.Easy to install, used for thread connection. Specifications:Color: BlackMaterial: NylonType: M32 Male Thread to M25 Female ThreadTotal Size: 42 x 17mm / 1.67 x 0.67inch(D*L)Outer Thread Diameter: 31.8mm / 1.25"Outer Thread Length: 11mm / 0.43"Inner Thread Diameter: 24.8mm / 0.96"Inner Thread Length: 14mm / 0.56" Packing Included:1 Pcs x Threaded Reducing Bushing