Item Type: Blender Coupler Material: Rubber, iron. Weight: 122 g / 4.3 oz(approx.) 1Blender Coupler: There are 4pcs blender coupler and 2pcs spanner in the set, and the large quantity will meet your needs for replacement. 2Smooth Rotation: This drive coupling has a reverse thread for your mixer, which is used to rotate the mixer blade. The coupling connects the agitator tank to the base. 3Perfect Fitting: Suits perfectly for Kitchen Aid KSB5WH KSB5 KSB3 driver, and the standard design ensures great fitting with stability. 4Easy to Install: Swing the spanner left and right until the spanner teeth grasp the notch position. Once locked, hold the spanner in the locked position with one hand and turn the coupler clockwise with the other hand. 5Before the Repair: Before starting maintenance, please make sure that the mixer has been unplugged, use a slit screwdriver to pry the coupling, and use a dry cloth to wipe the thread.4 x Blender Coupler 2 x Spanner