ONE SIZE FIT MOST PEOPLE: Our molding bars could fit the grillz according to the shape of your teeth after adjusting the grillz. The bars may not easily fit for every one. Thus we send you 2 molding bars (1 sets) for reusable to get an excellent fit. FINEST MATERIAL: Custom gold teeth grillz mouthpiece is electroplated 3 times gold based on the environmental brass so it will never tarnish or change color easily and is safe to health. The nickel content of the grillz corresponds to norms and is tested for nickel allergy.ONE SIZE FITS MOST(99%) (PERFECTLY IN THE TEENAGERS MOUTH)--THE 6 top 6 bottom grillz fits 99% of the people with our adjustable silicon molding bars. OCCASION--Teeth grillz can be used on any Occasional such as Party, Rave Parties, Discos, Clubs, Halloween, Birthdays, Festivals, and Events and can be used for Halloween costume, Joker costume party Rapper costume party, music concert and birthday party etc. Wear it for a photo shoot, video shoot, to the club, or just for everyday use. HOW TO USE--1Put the white silicone in the slot where you put the gold teeth. 2Put the gold teeth (silver teeth) together with the silicone into hot water at about 70-80 degrees for about 15-30 seconds to make the silicone soften. (Do not use boiling water or hot water, as this will soak the silicone and make it unusable) 3. Place the gold tooth (silver tooth) in your mouth and gently bite down on the gold tooth with your upper and lower teeth. The softened silicone is squeezed by the teeth to adjust the shape in the user's mouth, matching the shape of the teeth and playing a role in fixing the shape.4If the shape is not good, you can repeat the shape until you are satisfied.5After each use of the braces, wash and dry them with water and store them well.