Nipro catheter syringe, 30ml. Brand new, unopened. I bought three for force-feeding guinea pigs, but I have some left over, so I'm selling them. They are brand new and unopened. I used to make a powder out of pellets and soften them. The rubber part would get sticky, so I applied olive oil and used them repeatedly. They might be too thick for hamsters. Stored at home. No claims, no returns, please.