Click to expand Tap to zoom Nilfisk Advance ZD48330DY Speed Adjustment Kit by Nilfisk Advance OEM No reviews 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Contact Us For Pricing And Availability Description Description Speed reduction kit - New Style. Fits Clarke CFP Pro 20DS and Viper Venom VN20DS (replaces ZD48330) Fits Nilfisk Advance ZD48330DY (alt # zd48330dy) Replaces Nilfisk Advance ZD48330DY Speed Adjustment Kit Fits