This listing is for ONE BRAND NEW Nichia NUBM44-V2 or NUBM47-A1 450nm 7 Watt 9mm Laser Diode. The diodes are meticulously extracted from a new laser diode array. You must know what you are doing before hooking these up. Reverse polarity, excessive current and high heat will damage or ruin these. A proper CONSTANT CURRENT laser diode driver is required to drive the diode. The current should not exceed 4.5 amps!!! The diodes must be inserted in to a laser diode module before energizing to dissipate heat. A glass lens should be used as well. Be sure no dust, residue or other material is obstructing the diode window. Each diode is tested for functionality before shipping. Always wear protective safety glasses or goggles that block this spectrum and intensity of light... You've only got one set of eyes!!! I normally ship the same day or before the next available pick-up is available. Once your order is placed it will go out right away because I don't want you to have to wait any longer than you have to. Most orders are delivered within 3 business days in the continental US. International orders take longer of course but they have been getting delivered fairly quickly. Due to the volatile nature of electronics of this type, returns will only be accepted in original, sealed packaging. Please don't hesitate to contact me with ANY questions regarding my listing(s). I can offer a lot of technical assistance and/or point you in the right direction to find the answers you are looking for. I am usually very quick to respond and I'm more than happy to help. I will leave positive feedback once the transaction is complete. Please return the favor!