9704230 Blender Coupler Clutch replacment with Spanner Kit with KSB5 KSB3 and replaces part numbers: 9704230, WP9704230VP, WP9704230,AP2930430 PS401661 Easy to install, a flat blade screwdriver to pry the coupling off, then wipe the threads off with a dry cloth, and screw the new coupling on counter-clockwise Six rubber teeth ,reverse aluminum thread. Long lifespan. If your Blender blades didn't spin, it may says you need change a new coupler. colour:black Material:metal & plastic size:36x15.75mm Package Contents: 4 x Drive Coupler 1 x Spanner Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.