21.782 = Rubber Button Sprue Base  3'' 21.782 = Rubber Button Sprue Base  3'' 21.782 = Rubber Button Sprue Base  3''
21.782 = Rubber Button Sprue Base  3'' 21.782 = Rubber Button Sprue Base  3'' 21.782 = Rubber Button Sprue Base  3''

21.782 = Rubber Button Sprue Base 3''

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Article number: 21.782 = 3''
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.

Friction fit them onto the bottom of your steel casting flask.

Fits a 3" diameter casting flask.

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