Jeringa dosificadora oral BD, 1 ml, transparente, con tapa en la punta, 100 unidades

I had ordered these to measure and dispense liquid vitamin e. I use an insert for the vitamin e bottle opening which accepts the syringe tip. The previous monoject 3mls had a completely tapered tip so they sealed well while measuring the e out. These have a step in the tip so they do not seal. I can get them to work but it is much more difficult and are not inherently adaptable to different bottle inserts the way a fully tapered tip would be. I believe they have 2 version of the 3ml and I ordered a different one. I will be on the lookout for the original version I purchased.