[COMPATIBLE MODEL]: Fits for Hamilton Beach HBH550/650/850 blenders, fit a glass or plastic jars. not fit for Wave action or for Wavestation. o-ring gasket, white plastic screw cap, good sealing, no leak. Product performance: durable, convenient, efficient, environmentally friendly and fast Product name:mixer blade set Product application:cooking machine, wall breaking machine, soybean milk machine, smoothie machine, mixer Colour:Silver Material:stainless steel Package Contents: 1 * mixer blade (Nut spacer not included) Only the above package content, other products are not included. Note: Light reflection 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.