"Ramp top lip extensions are a small addition that can make a big difference. Made specifically to fit onto SUITCASE SIGNATURE, SUITCASE ADVANTAGE or TRIFOLD ADVANTAGE SERIES EZ-ACCESS® ramps, the extensions increase the depth of the top lips from 3"" to 9"". The added length makes the ramps much easier to use over the rear bumper of a van or SUV than without. The extensions have a non-skid aluminum construction and are easy to add or remove as needed."