Triangular shaped jack that fits into the rungs on a ladder. Positioned on 2 ladders to straddle a walkboard between them. Set of 2 jacks
Home Repair Resource Center
http://hrrc-ch.org/toollibrary/
2520 Noble Rd.http://hrrc-ch.org/toollibrary/
Cleveland Heights, OH, 44121
USA
(216) 381-6100