Includes a support to help prevent slipping. Lisle 45900 plus a new prop support - prevents slipping. Telescopes from 18-1/2" to 46-3/4" This tool now includes our standard 45900 hood prop plus a support to help prevent the bottom of the tool from slipping. Using this tool is as easy as placing the support over a hood adjuster and then setting the hood prop base into the holding support. The three piece telescoping shaft locks into any position to hold the hood at the desired height. The tool with the support telescopes from 20" to 48 1/4".