1) clear glass 10ml vials 2) 20mm grey rubber stopper 3) having a custom logo printed on the plastic button of a 20mm Flip Cap we offer flip off caps in 2 sizes: 13mm, 20mm with custom logo embossed, if you are looking for sealed bottle caps for pharmaceutical, medical, antibiotic, crimp top,serum, sterile,tubular,injectable glass bottle vial,you can choose it with a variety of closure color and ...