Magnetic screw-caps are a great alternative to crimp-caps, taking much shorter time and effort to fasten to the vials! With precision engineering and consistency in manufacturing, you can rest assured that these caps will go on your vials easily, every single time!
Specs
Septa: Blue PTFE/White Silicone, unslit
Center Hole: 8mm
Material: Aluminum
Neck size: 18mm