Model Compatibility: Fits scanner models S500, S510, 5110, S1500, and 6110 as specified in the product title. Part Number Match: Includes PA03576-Y027 and PA03576-Y029 part numbers for paper pickup roller tires. Quantity Included: Contains four individual rubber tires per set as indicated by “1Set/4PCS” in the title. Function Purpose: Replaces worn paper pickup roller tires to restore paper feeding functionality. Component Type: Rubber tire kit designed specifically for paper pickup roller assemblies in listed scanners.