Optimize your repair process using our high-quality JMG Motor Coupler made up of Pure Nylon Grade 6 & Brass Bush for maximum durability. This particular coupler has been designed especially for professional mechanics and it is 2.75 inches in size. The Side Locking System of this coupler assures that there will be no problem with connecting it to the motor for each and every repair. Its weight of 160g makes it durable enough to be used on heavy duty work.