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Best Choice ULTECHNOVO 
ULTECHNOVO 2sets Flask Clip Clamp Laboratory Flask Clamp Stand Clips Heavy Duty for Scientific Research SCIENCE-- As the teaching instrument, it can help cultivate children's learning interest to the scientific.Best Value Folany 
4 Prong Lab Clamp, Cork Lined on Swivel Bosshead, 2.7" Opening Zinc Alloy With 9.8 Inch Rod, Flask Beaker Holder, Single 【GREAT FOR LABORATORIES, CLASSROOMS & HOUSEHOLD 】This flask clamp is used to securely hold apparatus and glassware likefegayu 
Test Tube Clamp Beaker Tongs 26cm Crucible Tongs, Beaker Clip, Durable Lab Tongs Chemical Beaker for Beaker Lab Teaching Equip with plastic, hold the beaker more firmly.FELTECHELECTR 
FELTECHELECTR 5pcs Laboratory Flask Clamp Laboratory Support Stand Beaker Clamp Lab Beaker Stand Rod Extension Flask Cli Robust construction: incorporating stainless clamp and metal clips, this laboratory retort support stand resists deformaVILLFUL 
VILLFUL 3pcs Flask Clamp Holder Tube Clamp Lab Supplies Measuring Flask Accessory CHEMISTRY FLASK PRONG ROD-- Lightweight, practical and versatile, the clamp is convenient to use and helpful.JECOMPRIS 
JECOMPRIS 5Pcs Stainless Steel Lab Stand Clamp for Flask and Beaker Holders, Metalware Retort Mounting Clips Compatible Spacesaving design: compact laboratory retort support and convenient clip structure offer efficient use of bench space,NAMOARLY 
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