Knob as kitchenaid replacement parts, additionally referred to as thumb screw, reliable length design makes it fit properly in all KitchenAid Stand Mixers. (Not belong to the emblem of KitchenAid)Great update kitchenaid mixer knob: The plastic ridges at the knob head makes it easy to understand and real looking thread design screw into KitchenAid Stand mixer without obstructionThe mixer knob substitute for Kitchenaid can make the attachment and Kitchenaid stand mixers extra stable touch and fasten the tip cap at the entrance of the stand mixers, hold the stand mixer running safelyThe material of stainless steel and stable plastic ridges makes the mixer knob substitute for Kitchenaid extra durable.1/4-20 thread size for kitchenaid mixer knob. 2 knobs a pack, value for money. Quality warranty: Comes with 1-Year Warranty, any quality issue, feel free to touch usCapability Qualityreplacement to KitchenAid Attachment Knob, including Part Numbers WP9709194, 9709194, 4162142, 1262050, 240374, 4169829, AH991938, EA991938, AP6013782, AP3952642, PS11747009, PS991938 Compatible all KitchenAid stand mixers, including tilt-head mixers: 4.5 QT Class/Class Plus, 5qt Artisan Series, and bowl-lift mixers: Professional 5, reliable 5 plus, official 600 Etc. If you lost the original connection knob, just replace it with this!