18G 38mm luer lock hypodermic needle for mycology. 18G is strong and able to pierce injection ports on mushroom bags and culture jars. The luer lock , locks the needle to the syringe for safety. Also suits Luer Slip syringes. Sterile and individually packaged. Suits our 10ml Syringe and 20ml Syringe Luer Lock syringes. Norji Lab quality mycology supplies. 20, 50 and 100 pieces (box) options.