Feature : Gripper can be adjusted from 1.5 in. to 3.5 in. and has a 5/8 and 5/16 double sided tongue and groove cam Made of heavy-gauge steel Saves time Gripper swivels for angled decks Suitable for use on decks, docks, flooring, tongue and groove ceilings and walls, planking, paneling, and more Interchangeable parts for either pushing or pulling