The product titled ‘Ext Set Side Swivel Priming Volume .3mL 50Bx – MX459SL’ is an extension set designed for medical use. It features a side swivel mechanism for easy handling and flexibility during use. The set is primed with a volume of .3mL, ensuring it is ready for immediate use. This product comes in a box of 50 units, making it ideal for medical facilities that require a steady supply of these extension sets.