AD 56601522 Urethane Disk Squeegee for Nilfisk Advance. Priced Each. All disk deck blade kits include all side skirt blades. Fits popular Nilfisk Advance models such as the Nilfisk 855, and the Advenger 3400ST. Upgraded rigid opaque polyurethane blades are designed for heavy duty use on oily, textrued flooring. Urethane blades can also be used for everyday scrubbing jobs on smooth flooring. Urethane blades outlast tan gum blades. Urethane is oil and abrasion resistant by natrue. Replaces Nilfisk Advance 56601522. Our Part Number AD 56601522