21.826 = Rubber Tree Sprue Base  2-1/2'' 21.826 = Rubber Tree Sprue Base  2-1/2'' 21.826 = Rubber Tree Sprue Base  2-1/2''
21.826 = Rubber Tree Sprue Base  2-1/2'' 21.826 = Rubber Tree Sprue Base  2-1/2'' 21.826 = Rubber Tree Sprue Base  2-1/2''

21.826 = Rubber Tree Sprue Base 2-1/2''

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Article number: 21.826 = 2-1/2''
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This rubber sprue base has a long tapered center for tree spruing with multiple items on the sprue. The hole is made for 1/4" sprue wax.

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

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

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