Description
The cup in the center is filled with wax or clay to form the base for the sprue.
| Item # | Diameter | Fits | Price | Qty |
|---|---|---|---|---|
| 1 3⁄16” Cup | 3″ O.D. flask | |||
| 1 3⁄16” Cup | 3 1⁄2” O.D. flask | |||
| 1 3⁄4” Cup | 4″ O.D. flask |
Cup Style Rubber Sprue Bases
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