LICENSE PLATE SHEETING: COILED 3105-H12 ALUMINUM ALLOY HAVING A RECYCLED CONTENT OF AT LEAST 50%. 20 GAUGE .032 (+.003" - .000") THICK X 12-1/8" ( OR - 1/32") WIDE. ANY VARIANCE FROM THE 12-1/8" WIDTH MUST BE CONSISTENT THROUGHOUT THE COIL. NO. 1 LICENSE PLATE STOCK CONVERSION COATED & COMMERCIALLY OIL FREE. CHEMICAL COMPOSITION AND PHYSICAL PROPERTIES TO CONFORM WITH ASTMB 20-78. INSIDE DIAMETER OF COIL CORE TO BE 16". ROLL WEIGHT TO BE A MINIMUM OF 1500 LBS., NOT TO EXCEED 2000 LBS. INTERWEAVE.