30G0.5" Sterile Blunt Needles with plastic hub and stainless steel blunt cannula. Blunt tip needles are useful for a variety of laboratory tasks, including connection to indwelling catheters. SAI's smooth, burr-free stainless steel needles prevent damage to the lumen of the catheter during dosing, sampling, flushing or locking. These needles are sterile and individually packaged, 25/pk. Non-sterile blunt needles are available separately. Product is for laboratory animal research only.