AD 56601521 Urethane Disk Squeegee for Nilfisk Advance. Priced Each. All disk deck blade kits include all side skirt blades. Fits popular Nilfisk Advance machines such as the Advenger 2800ST 28" disk, and the BR 755. 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 56601521. Our Part Number AD 56601521