Heavy duty aluminum stanchions for sailboat or trawler boatlift. Set of four double padded stanchions for boat lift capable of supporting 16,000 lbs. They fit on a 10 inch "I" beam and are adjustable from 29' to 37" to accommodate any contour of bottom of boat. Each square pad is 9" and they rest on a 3" diameter adjustable pedestal. Over $2,000 new in 2016. Located in Cape Coral, Florida.