This lens sucker kit is optimal for repairing and cleaning lenses and watches, mounting IC components, and handling other tiny parts. The large suction cups can provide a strong vacuum seal for lenses, while the small ones can pick up tiny parts from watches and integrated circuits. The suction pen tube can retrieve objects from hard-to-reach places while keeping them free of fingerprints, smudges, grease, and stains. 7 different-sized suction cups (12mm, 15mm, 20mm, 25mm, 30mm, 35mm, 40mm) suit lenses, optics, watches, and IC components of sizes. Notes: 1. Stains, grease, moisture, particles, and dust may prevent the suction cups from working. Please clean the surface before use. 2. Do not use the product on concave or convex surfaces. 3. Do not use the product for anything other than its intended use. 4. Clean the product with mild detergent. After that, soak it in lukewarm water for 5 minutes and let dry. 5. Keep out of reach of children. 6. Keep from fire. Colour:Black Material:Silica gel Package Contents: 2 * Suction Pen 14 * Suction Cup Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.