3Pcs 90mm Straight Glass Tube Stems with Cleaning Brush, Long Air Drying Tubes for Lab Chemistry Experiments, Replacement Glassware Parts for Scientific Drying Racks

This 3-piece set of 90mm straight glass tube stems is designed for reliable use in lab chemistry drying and experimental setups. Each stem features a precision-bored straight channel that delivers consistent airflow, while the clear lab-grade glass construction offers good thermal resistance and easy sample observation during use. The set includes 3 identical stems, so you always have a spare on hand for multiple experiments or quick replacements. Compatible with standard lab stands, clamps, and drying rack holders, these glass stems integrate easily into your existing equipment. Also included is a cleaning brush to help you quickly remove dust or residue from inside the tubes, keeping your glassware clear and ready for the next run. Simple. Durable. Ready when you are.

• 90MM STRAIGHT GLASS TUBE STEMS – Precision-bored straight design ensures consistent airflow for lab chemistry drying and experimental applications.
• 3-PIECE REPLACEMENT SET – Includes 3 identical lab-grade glass stems, giving you reliable spares for multiple setups or continuous use.
• DURABLE LABORATORY-GRADE GLASS – Clear, smooth-finish glass resists thermal shock and chemicals, providing lasting performance in scientific environments.
• EASY FIT FOR STANDARD LAB STANDS – Designed to work seamlessly with common lab stands, clamps, and drying rack holders in typical chemistry setups.
• INCLUDED CLEANING BRUSH – Comes with a dedicated brush to easily remove residue from inside the drying tubes, keeping your glass stems clear and functional for every use.