This Commercial Duty Activity Table has a 1 1/8" Thick Industrial High Density Wood Core Top with a High-Pressure Laminate Work Surface, and a Masonite Backer Sheet for Added Strength and Warp Resistance. High-Pressure Laminate is the same material used on Kitchen Counter Tops, it is highly Impact, Scratch, Cut, and Stain Resistant. Edge is Impact Resistant Plastic T-Mold. Leg Brackets are Pre-Attached with 7 screws each, Legs fit under Brackets and are held in place by 3 additional screws, 10 Screws Total, for the strongest possible design. Legs have Oversize Hairpin Brace for additional Strength and Stability, and Nylon Self-Leveling Glides to protect your floors. Height Adjusts from 21" to 30" in 1" increments. Special Shouldered Set Screw prevents leg from slipping, even if it is not properly tightened. Free SpeedWrench included with every table, for fast and easy Height Adjustment. Custom-Built-to-Order. Top and Legs ship in separate cartons.