LEM Products Spring Loaded Burger Press Cast Iron. Once you've settled on a thickness just push the top button down and you've got a perfectly formed 4 3/8in burger patty. You'll never have to worry about mismatched burger sizes again. UseLEM Freezer Sheets (# 027A)when making your burgers for easy separation after freezing. Specifications for LEM Products Spring Loaded Burger Press: Manufacturer: LEM Products Color: Cast Iron Fabric/Material: Aluminum Features of LEM Products Spring Loaded Burger Press 1-Year Warranty Heavy duty aluminum Non-stick Adjustable 1/4in to 1in patties Hand wash and dry Use with LLEM Freezer Sheets (# 027A)to keep your fresh patties from sticking together Package Contents: LEM Products Spring Loaded Burger Press LEM Products 1261: Spring Loaded Burger Press Cast Iron