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HMA-146 0.5in (12.7mm) Orifice and HMA-147 0.75in (19.0mm) Orifice are accessory discharge tubes for the HM-371 Grout Flow Cone, or replacements for orifices on the HM-372 and HM-373 Grout Flow Cone Sets. HMA-146 meets ASTM C939 Standard.
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