Glass Syringe (Per Pack 3), 50 ml Glass Syringes, 50 ml Tomopal Glass Syringe w/1.0 ml Graduation for Industrial or Dissolved Gas Analysis uses only. P/N: 140-4550-X003, Made in Japan

Do not buy this product. You will have wasted your money. I only recently attempted to use these syringes only to realize that the plunger does not slide back into the tube portion, at all. I tried everything! The only thing I can surmise is that the mild warmth of the summer months cause the plunger to expand just enough to keep from being placed back into the tube. Two of the plungers became stuck at the very beginning of the tube and cannot be dislodged. One of them actually cracked the tube. So, I essentially have, possibly, only one syringe that may actually work. However, none of these syringes came with stoppers either. This was a big waste of my money and I really regret only opening the package recently. Otherwise, I would have returned it for a full refund. Super waste!

They work great for my purposes, and the company that shipped them were prompt and all has been fine.