{"product_id":"iron-test-tube-flask-clamps-4-pack-heavy-duty-lab-equipment","title":"4-Pack Iron Test Tube \u0026 Flask Clamps | Heavy Duty Lab Equipment","description":"\n\u003ch2\u003e4-Pack Heavy Duty Iron Test Tube \u0026amp; Flask Clamps\u003c\/h2\u003e\n\u003cp\u003eKeep your laboratory work safe and organized with this set of \u003cstrong\u003e4 heavy-duty iron test tube and flask clamps\u003c\/strong\u003e. Designed for students, educators, and lab professionals, these versatile clamps securely hold test tubes, condensers, flasks, and other glassware during experiments — even when contents are hot and untouchable. Made in Mainland China.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurable Iron Construction:\u003c\/strong\u003e Built from solid iron material for long-lasting strength that resists bending and breaking under regular lab use.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVersatile Grip:\u003c\/strong\u003e Maximum opening distance of approximately 4 cm — suitable for holding test tubes, condensers, flasks, and more.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLightweight \u0026amp; Portable:\u003c\/strong\u003e Compact, easy-to-carry design makes these clamps ideal for classroom labs, home experiments, and professional settings.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFine Workmanship:\u003c\/strong\u003e Smooth, well-finished surfaces ensure a secure, non-damaging grip on delicate glassware.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePack of 4:\u003c\/strong\u003e Get four identical clamps in one order — great value for stocking your lab stand setup.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Iron\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Silver\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e Approx. 19.20 × 4.00 × 2.00 cm \/ 7.55 × 1.57 × 0.79 in\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax Opening Distance:\u003c\/strong\u003e Approx. 4 cm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 4 clamps per set\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Made in Mainland China\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat Can They Hold?\u003c\/h3\u003e\n\u003cp\u003eThese clamps are designed for a wide range of standard lab glassware, including:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eTest tubes\u003c\/li\u003e\n  \u003cli\u003eCondensers\u003c\/li\u003e\n  \u003cli\u003eErlenmeyer and round-bottom flasks\u003c\/li\u003e\n  \u003cli\u003eBeakers and other cylindrical glassware\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePerfect For\u003c\/h3\u003e\n\u003cp\u003eWhether you're a student, teacher, or lab technician, these clamps are a must-have accessory for any lab support stand setup. They're equally useful in school science labs, home chemistry kits, and professional research environments.\u003c\/p\u003e\n\n\u003ch3\u003eYou May Also Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/stainless-steel-cord-end-caps-with-loop-jewelry-making-6pcs\"\u003eStainless Steel Cord End Caps with Loop – 6pcs Jewelry Findings\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/stainless-steel-flat-disc-spacer-beads-gold-silver-jewelry-making\"\u003eStainless Steel Flat Disc Spacer Beads Gold Silver – 20-50pcs\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/hand-power-tools\" target=\"_blank\" rel=\"noopener\"\u003eOSHA guidance on hand and power tools\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What size glassware can these iron lab clamps hold?\u003c\/h4\u003e\n\u003cp\u003eA: The maximum opening distance of each clamp is approximately 4 cm, making them suitable for standard test tubes, condensers, flasks, and similar lab glassware within that diameter range.\u003c\/p\u003e\n\u003ch4\u003eQ: Are these clamps safe for holding hot test tubes?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. These iron clamps are specifically designed to securely hold test tubes and other glassware when contents are hot and cannot be touched directly by hand, providing a safe and stable grip during experiments.\u003c\/p\u003e\n\u003ch4\u003eQ: How many clamps are included in the set?\u003c\/h4\u003e\n\u003cp\u003eA: This listing includes a set of 4 heavy-duty iron test tube and flask clamps, giving you multiple clamps for simultaneous experiments or to outfit a full lab stand setup.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What size glassware can these iron lab clamps hold?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The maximum opening distance of each clamp is approximately 4 cm, making them suitable for standard test tubes, condensers, flasks, and similar lab glassware within that diameter range.\"}}, {\"@type\": \"Question\", \"name\": \"Are these clamps safe for holding hot test tubes?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. 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