Safe injection practices and proper infection control protect care givers, healthcare workers and patients. Safety or retractable needles are similar to a traditional needle except in one aspect. They include a built-in safety mechanism to reduce the risk of needlestick injuries to caregivers, healthcare workers and others. The safety needle will have either: a sheath is placed over the needle, or the needle retracts into the barrel of a safety syringe. Sterile Safety Needles attached to Luer Lock Syringes and Luer Slip Syringes. Shop with confidence. No account necessary. Order Conveniently Online. Guaranteed Fast, Secure, and Discreet Delivery. Overnight shipping is available.