21.781 = Rubber Button Sprue Base 2-1/2'' 21.781 = Rubber Button Sprue Base 2-1/2''
21.781 = Rubber Button Sprue Base 2-1/2'' 21.781 = Rubber Button Sprue Base 2-1/2''

21.781 = Rubber Button Sprue Base 2-1/2''

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Article number: 21.781
Availability: In stock

This rubber sprue base features a large center for button spruing.  Fill the center with wax to directly sprue one wax grouping of waxes.

Fits a 2-1/2" diameter casting flask.

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