Vacuum suction technology with 3 adjustable suction modes (low/medium/high) provides precise control for diamond sizes from tiny round drills to large square stones. Strong suction helps prevent slips and ensures accurate placement every time. Wax-free and clean design: no sticky wax or residues. Vacuum grip holds diamonds securely, making it suitable for children or users sensitive to adhesives. Easy to clean with a dry cloth. Cordless and portable: rechargeable battery yields about 1.5 hours of use per charge. Cable-free operation; lightweight 18.5 cm design fits in craft bags for on-the-go creativity. 2 interchangeable tips: round tip for small round diamonds; square tip for larger square or specially shaped stones. Quick-change design adapts to your diamond art set. Use scenarios: ideal for precise placement of tiny diamonds in intricate patterns; convenient for laying out larger square stones in bigger sections of a diamond art project; suitable for kids or adhesive-sensitive users in classrooms or at home, anywhere portability is a benefit.