<b>PLEASE TRY TO USE PROFESSIONAL TATTOO PRODUCTS.</b></br></br> <b>[About Our Product]</b></br> BIGWASP Tattoo Needle Cartridge Allows tattoo artists to set up needles and switch needle configuration very quickly during tattooing process. </br> Compatible with All types cartridge grips & Hawk machines. No Allen keys required.</br> Disposable single-use tattoo needle cartridges.</br></br> Our "BigWasp Tattoo Needle Cartridge" are suitable for either the beginner, apprentice or the confirmed tattoo artists looking for tattoo supplies.</br> If for any reason you are not fully satisfied. just simply return it for a full refund or exchange.</br></br> </br> <b>[About Brand]</b></br> Notice: BIGWASP Tattoo Needle Cartridge is the brand owner of BIGWASP product.