Rubber Stopper, #3, 2-hole

You will always have the right size rubber stopper on hand with this 2 lb package of assorted solid, 1-hole and 2-hole stoppers ranging in size from #00 to #8. You get 60 stoppers total.

These No. 2 rubber stoppers are 16-20 mm diameter with two 3 mm diameter holes.

These #3 rubber stoppers are 18-24 mm diameter with one 4 mm diameter hole.

These #5 rubber stoppers are 23-27 mm diameter with two 5 mm diameter holes. No. 5 rubber stoppers fit Pyrex 125 ml Erlenmeyer flasks.

These # 6.5 rubber stoppers are 27-34 mm diameter with two 5 mm diameter holes.

These #3 rubber stoppers are 18-24 mm diameter. #3 rubber stoppers fit liter soda bottles.

These #0 rubber stoppers are 13-17 mm diameter with two 3 mm diameter holes.

These #8 rubber stoppers are 33-41 mm diameter with two 5 mm diameter holes.

42-50 mm diameter. Fits many vacuum bottles.

These 100 ml Home Science Tools Erlenmeyer flasks are made of high-quality borosilicate glass that can be heated directly in an open flame.