Rubber Stopper, #6.5, 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 #6.5 rubber stoppers are 27-34 mm diameter with one 5 mm diameter hole.

These 500 ml HST Erlenmeyer flasks are made of high-quality borosilicate glass that can be heated directly in an open flame.

These 250 ml glass Erlenmeyer flasks can be heated directly in an open flame. Essential for chemistry labs!

5mm glass tube fit in all rubber stoppers & attach to 4.8 mm plastic or rubber tubing. Pack of two.

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

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.

42-50 mm diameter. Fits many vacuum bottles.

This glass tubing cutter has a single blade held in a nickel-plated die-cast housing.

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