PTFE Electric Stirring Rod Overhead Stirrer Mixer Shaft Anchor Paddle for Flask in Lab (300MM)

These lab stirring paddles are pretty good.I had to cut off a little of the PTFE on the top to make it fit into my coupling.That’s really easy with a blade. Just go slow and it rotate.The only issue with these is there is a PTFE rod that holds the flappy bits to the shaft.It seems to keep chemistry there so cleaning is a bit annoying.Other then that, I can recommend them.

I only had it for about three days when the head of it popped off.Mind you it was trying conditions, 24 hours in an acidic mixture with a very high-torque stirrer.. the plastic rods holding the flaps couldn't take it.

Exactly what I was looking for. Great price. Will buy several more

It works and looks great, but the shaft metal is the softest steel that I have ever come across. I can easily bend it with pinky pressure when mounted to the stirrer. This is both good and bad. With a couple well placed pulls I was able to straighten the shaft from it's "as received" bent condition. Running my stirrer anymore than about 200 rpm makes the shaft go so unbalanced that it will bend itself and throw the glassware. I ended up cutting it down to about 10' length to make it safer. If the shaft is fully submersed in liquid, it tends to be more stable, otherwise its scary at higher RPM.