This adjustible width and length base adds mobility to your tools/machines. The spring pin snap adjustment quickly expands from 18" x 18" to 28" to 28" letting you configure the base for total support (no tools required). Heavy duty frame holds up to 600 lbs. Two fixed and two swivel casters. Two foot levels lock the base securely in place. There are two bases available. $75.00 each. Cash only. Clean and in good condition.