[Amazon.com] 25ODx21IDx1000L mm (1"ODx40"L) Quartz Process Tube Open 2 Ends

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[Amazon.com] MTI Corp Quartz Tube: 50 OD x 44 ID x 450 L mm (2" D x 17.7" L) OTF-1200X-S50-110v Replacement Tube - EQ-QZTube-50GE-450

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