Due to the tight wiring and solid bearings; finely rated magnets; and quality control and rechecking systematically—these BLDC motors are reliable for durability and performance.The magic of speed is bundled in the body of 28 (diameter) x 26 (length)mm only, weighing only 54gm. Every volt is turned into 1000 rpm, so you get a robust speed. Shaft is 3 mm in diameter. You may join it with an ESC of 20-30Aand the cells recommended to be used are 3s-4s Li po. The wiring is done finely so as to ensure high performance for long.