Swivel plate caster set; 3 in (Dia) wheels; Universal 3 1/2 in square mounting plate; 1 3/4 in x 3 in and 3 in x 3 in hole patterns; Polyurethane wheel construction; Toe activated brake; Resistant to acids and caustics; Temperature range of -45°F to 180°F; 200 lb weight capacity per caster; NSF; Sold as a set of 4 casters; Note: Mounting hardware not included