Rubber Sprue Base For Jewelry Making This is a new rubber sprue base Great for holding the sprue rod in the casting flask while pouring in the investment Made of tough flexible rubber It measures approximately 3 1/8" x 1" (79.3 x 25.4 mm) Newer versions of the item shown may be shipped, as a result, there may be a slight variation in color and design.
Related Rubber Sprue Base Jewelers Lost Wax Casting Flask 3-1/8"
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