2-1/2 60 mm Rubber Sprue Base Jewelry Lost Wax Casting Flask Ring...

2-1/2" 60 mm Rubber Sprue Base Jewelry Lost Wax Casting Flask Ring Tree C Style

• Holds 5/16 - 3/8" Tree Tightly in place
• Leak-proof
• Measures 2-1/2" in diameter
• Will fit both Regular and Perforated Flasks
• Great for Centrifugal casting and vaccum lost wax casting processes