Syringes are manufactured to ensure the perfect mating of barrels and plungers. Any Micro-Mate interchangeable syringe of a particular size will fit any Micro-mate interchangeable barrel of that same size. Syringes are made from borosilicate resistance glass. Colored plunger ends are fused around bottom beveled rim of plunger to facilitate dosage measurements. Physical-chemical properties of glass provide protection against thermal shock and are corrosion resistance. Please note: All our needles are Luer-lock hub and work with all syringes. Made from borosilicate resistance glass. Colored plunger ends are fused around bottom beveled rim of plunger Physical-chemical properties of glass provide protection against thermal shock Please note: All our needles are Luer-lock hub and work with all syringes. SKU: 5024 UPC: 614091050242 BRAND: Popper & Sons MPN: G5127 Made In: Italy Micro-Tools makes every attempt to provide accurate information for each item. Actual packaging and/or specifications may be slightly different from the information and picture provided.J096D