9704230 Blender Coupler Clutch replacment with Spanner Kitwith KSB5 KSB3 and replaces part numbers: 9704230, WP9704230VP, WP9704230,AP2930430 PS401661Easy 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-clockwiseSix rubber teeth ,reverse aluminum thread. Long lifespan.If your Blender blades didn't spin, it may says you need change a new coupler.colour:blackMaterial:metal & plasticsize:36x15.75mmPackage Contents:4 x Drive Coupler1 x SpannerOnly 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.