The 14 mm (14#), 19 mm (19#) and 24 mm (24#)stopper with an inner diameter is ideal for laboratory glassware equipped with a corresponding 14/20 joint, 19/22 joint and 24/29 joint
High-quality natural rubber, reusable, avoid cross-contamination for optimal use
Precision-shaped, accurately sized, smooth-surfaced, and durable for long-lasting use
