Solo 4300343 Sprayer Deluxe Shoulder Saver Harness Can be used with the following backpack sprayers :473-D, 473-P, 425, 475-B, 425-Deluxe, 475-B-Deluxe, 435, 485, 417-18L Contoured and padded shoulder straps Lumbar support. Genuine solo replacement parts Item is harness alone. Made in the usa