high quality. Made of tremendous materials, durable. Used to modify electric motorbike hub motor nuts, usually for 500W-5000W motors with 12 shaft. Product parameters: Style:M12 front Colour:Silver+black Material:Metal Package Contents: 1 set * E-bike Hub Motor Axle Only the above package content, diversified merchandise usually are not included. Note: Light and varied reveals can cause the color of the thing within the picture a little diversified from the real thing. The dimension allowed error is +/- 1-3cm.