Tattoo tips is made of high quality PVC hard plastic prevents bending. Model number is carved on every tip. It prevents to confuse the size. Each tattoo tip is individually blister packed. Peeling back the paper cover from plastic blister to use. ADVANTAGE DESIGN - Unique tattoo tips design make the ink flowing well, stable needle discharge, large ink absorption and strong ink storage capacity. more convenient and safe than cleaning and sterilizing SS tips. SATISFIED PROMISE - We will give you 100% satisfaction promise. If for any reason you are not fully satisfied about the tattoo tips. just simply return it for a full refund or exchange.