1. Big pulling power: dual cup hand-held vacuum lifter with maximum horizontal suction up to 110 kg (242.5 lb); fast attachment on flat, curved, clean, smooth, non-porous surfaces. 2. Manual seam setter: designed to level and smooth the seam surface; this seam adjuster produces a clean, chip-free and straight edge. 3. Durable construction: odorless, strong materials with a rubber grip and an ABS handle for a secure, ergonomic hold. 4. Easy to use: tighten and clamp the two handles to create powerful suction; fast application and release time to increase worker productivity. 5. 360 degree rotation: suction cups at both ends can rotate fully for flexible positioning; simple to operate and practical for seam joining and marble countertop installation. Use scenarios: - Lifting and positioning heavy stone countertops such as marble or granite during installation, on flat or curved non-porous surfaces. - Seam joining and edge finishing in countertop fabrication or renovation, producing level, smooth seams with clean edges. - Handling non-porous panels such as glass or ceramic tiles in fabrication or installation projects that require strong suction and precise seam alignment.