General product: are suitable for blender. Blades are not included. Specifications: Diameter: . 3~3.2cm / 1.18~1.26in; height: about 1 cm / 0.39 inch; Easy to install: 1. Take a towel and wrap the blade with the towel in your left hand. 2. Hold the connecting shaft with your , and the connecting shaft rotates clockwise to descend. 3. Tighten it counterclockwise when installing. Colour: black + transparent Material: plastic + rubber + stainless steel Package Contents: 2 * Base gear 2 * Rubber blade gear Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.