Set of 10 Rubber Stoppers 21/24/28

Set of 10 Rubber Stoppers 21/24/28

Set of 10 rubber stoppers designed for use in school laboratories and science classrooms. Each stopper has a bottom diameter of 21 mm, a top diameter of 24 mm, and a height of 28 mm.

The set includes 10 pieces for easy replacement and use with common glassware such as flasks or test tubes in educational settings.

• Quantity: 10 pcs
• Bottom diameter: 21 mm
• Top diameter: 24 mm
• Height: 28 mm