3400 series extra heavy duty aluminium step. Meets or exceeds CSA Grade 1A, ANSI Type 1A. Super tough copolymer top for strength and durability. Features wide 3 inch slip-resistant serrated aluminum steps for safe climbing. Rugged outside Zinc coated steel spreader arms. Heavy duty hinged utility tray for holding tools and paint accessories (10 x 10). Heavy duty slip-resistant safety boots.