Model Compatibility: Fits KV-S4065CL, KV-S4065CW, KV-S4085CL, and KV-S4085CW scanner units as listed in the product title. Part Identification: Matches KV-SS033 and KVSS033 exchange roller kit designations specified for the supported scanner models. Functional Purpose: Serves as a replacement component to restore scanning function for compatible equipment lists. Component Type: Identified explicitly as an exchange roller kit intended for use with the stated scanner series. Equipment Scope: Designed strictly for the four specific KV-series scanner models mentioned in the product description.