Metcal n 700 series syringe barrels packs of 50 metcal 910 n these metcal 910 n 10cc syringe barrels have a unique ultra low construction of the inner diameter yielding high accuracy and stability the syringes are made from industry compliant silicone and chloride free low friction polypropylene metcal 910 n 700 series syringe barrel 10cc natural pack of 50