boxi qty(2) boxi 6913 gas charged universal lift supports extended length 12.50" compressed length 8.50" 36 lbs 3/8" ball socket gas struts shocks for tool box lid boat storage lids truck topper truck cap is up for auction in Automotive. This item is in Good Condition. Bid on this item at our Rogers - N Dixieland Rd. location before the auction closes.