Features: 1. Fast results: No worries, no guesswork. In seconds, you'll know if lead protection measures are required. 2. Easy to use: Lightly dip the cotton swab in water and as soon as the tip of the swab turns mustard yellow, wipe the painted surface with a lead-based paint spray. 3. Easily distinguishable results: After rubbing the painted surface, red/purple/pink indicates that lead has been detected. Yellow means that lead has not been detected. 4. Multiple uses: Lead inspection wipes are used on wood, metal, plaster and drywall. This means that only one test is required to reliably determine the absence of regulated lead-based paint on most surfaces. 5. Safe material: The sticks are made of high-quality environmentally friendly materials that are harmless to the human body. Please do not put the cotton swabs in your mouth. Specification: Product size: 18*16.5*8cm Product weight: 50g Use: Toys, woodworking, porcelain, jewelry, bathtubs, glaze, ceramics, antiques, plumbing, etc. Includes: 30pcs* Lead test sticks