Befenybay 4 Pcs 6mm to Universal Joint Shaft Coupling with Screws for Motor

【 Material】 Universal joint shaft coupling is made of 45# steel, and then electroplated，much stronger, wearproof, durable to use 【Widely Used】Universal joint shaft coupling is produced based on International Flange Standard, widely used in model shaft connection 【Dimensions】Inner Diameter: 6mm to 6mm. Outer Diameter: 11mm. Height: 24mm 【Package Include】4pcs 6mm to 6mm universal joint shaft coupling, 1pcs M4 hex wrench, 8pcs fastening screws 【Function】 Can be used in model airplane boat, robot,RC modelmotor etc