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Flask extender - lost wax casting
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Product Code: F339-4

Description Technical Specs
For Casting Flasks, Jewelers need Flask Extenders, used on solid wall flasks to prevent overflow of investment. These extenders are made of flexible rubber, the sleeves stretch over the flask end.
Prevent investment overflow with the durable, reusable flask extenders. Slide the flexible, high–quality extender over the top of the flask to give the extra height when debubbling the investment. Pull off after investment is set and before placing the flask in the burnout oven.

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