Hex Head Borosilicate Glass, 24/40 outer joint, hex head design, has good sealing, durable to use.
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Plastic Clamp The clips are used to hold ground glass joint glassware, smooth surface wont corrode or scratch the glass.
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Package Package includes 2 Pcs Glass Hex Head Hollow Glass Stoppers with 24/40 Joint + 10 Pcs #24 Plastic Splice Clamps, enough to meet your needs.
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