New 10pcs/batch Transparent Pyrex Glass Blow Tube 100mm Long Thick Wall Test Tube 10*100mm

if you need glass test tubes, this is the place to get them. excellent!

they were nice but only 1 end is open. great for science projects for kids but no good for other purposes

they're okay except for the glass is a little thin on the small small ones I got

not Pyrex glass .melted under minimal heat. useless

they are very small and extremely thin walled break with little pressure otherwise decent little test tubes

cool, nics