3" x 5" Perforated Casting Flask: About 75mm in diameter, and 125mm in height. There are many other sizes available, such as 2.5" x 4", 2.5" x 5", 2.5" x 6", 3" x 4", 3" x 6", 3" x 7", and 4" x 5". Rubber Sprue Base: It helps reduce mold shifts and defects, improve casting quality and sealing properties, facilitate removal, and achieve overall efficiency in metal casting operations. 304 Stainless Steel: Made of 304 stainless steel, DZQ Perforated Casting Flask which gives a longer service life. Excellent Performance: Perforations in the flask allow improved mold ventilation. Wide Application: Used for metal casting like sand casting, investment casting, and lost wax casting, it’s ideal for jewelry making and art foundries. Used for metal casting like sand casting, investment casting, and lost wax casting, it’s ideal for jewelry making, automotive, aerospace, and art foundries.