UPGRADED - REINFORCED: Solves the issue of missing springs and shims on the mixing shaft. The mixer attachment is securely locked to the shaft, reducing wobbling of the mixer attachment and stainless steel mixing bowl caused by excess space during use. WIDELY USED AND COMPATIBLE: Quick Install Spring and Washer Kit compatible with KitchenAid Tilt-head and Bowl-lift mixers from 3.5 Quarts to 7 Quarts, including Classic, Artisan, and Pro-Line models. (Note: Excludes mini models.) Package includes 2 sets of Spring and Washer Kits and 4 Stand Mixer Attachment Holders. INSTALLATION: Unlike original-closure washers that fit only removable beater shafts up to 2023, this upgraded kit allows easy installation without disassembling the mixer by simply rotating the spring and washer. 4-PCS Stand Mixer Attachment Holders: Universal design organizer compatible with various KitchenAid mixer accessories featuring hanging holes, including Flex Edge Beater, Flat Beater, Dough Hook, and Wire Whip. Note: Slight color variations may occur due to lighting and display differences; this does not affect functionality. Color: As Shown Material: Plastic + Metal Package Contents: 2 Sets * Spring and Washer Kits 4 * Stand Mixer Attachment Holders Only the above package content is included; other items are not. Note: Light reflection and different displays may cause slight color differences between the image and the actual item. Measurement error allowance is +/- 1-3 cm.