Closed Size: 1-3/16" Wide X 1" Deep X 11-3/4" LongOpened Arm Length: 7-7/8" LongMaterial: Cold Rolled SteelFinish: Zinc PlatedLoad Rating: 750 Lbs. / PairArm Locks Into Place When Opened, Easy Push Button Release To Fold DownHeavy-Duty Storage And Work Surface Applications Where Limitation And Or Flexibility In Space Is CriticalAllows You To Create A Worksurface That Can Be Quickly Folded Out Of The Way When No Longer NeededAdjustable To 4 Positions: 0, 70, 80 And 90 Degrees