Set of 9 Heavy Duty Stoppers, 2 Holes on Top & Bottom Porcelainware Displays 8 Parts including the

Displays 8 Parts including the internal structures

Organic 3D Chemistry Model Kit: Silicon Dioxide SiO2 Molecular Structure Model

Ni-MH and Ni-Cd rechargeable batteries and apply an appropriate charging mode

Premium Quality: All beakers and cylinders are made of thick and high-quality plastic

Two finger clamp

Set of 9 Heavy Duty Stoppers, 2 Holes on Top & Bottom Porcelainware Displays 8 Parts including theIncluded: 9 x Heavy Duty Stoppers, 2 Holes on Top & Bottom, Red Rubber, Solid USA Size 25. Bottom Dia.: 25mm. Top Dia: 28. 5mm. Height: 28mm. Autoclavable, with superior chemical durability. Low temperature gradient can withstand high temperatures & thermal shocks. Premium Quality: Stopper is made of high quality, heavy duty and durable rubber. Designed for use in professional laboratories but is an ideal choice for science classrooms and household