Needle Disposable Probe Stainless Steel Cannula And Polypropylene Hub Green 21 Gauge Length 1/2 In Outside Dia 0.032 In Inside Dia 0.023 In Dispenses Fluids Adhesives Solvents Fluxes Oils And Pastes Used In Production Maintenance Laboratory Operations And Industrial And Institutional Dispensing For Use With Syringes and Dispensing Machines Package Quantity 50