The Automatic Stealth Seamera is the ultimate heavy-duty seam setter for joining, leveling, and flattening stone. The product’s open design allows you to work on the seam while in use; removal is not needed to apply epoxy or scrape the seam. Seams are easily opened and closed via a smooth-turning knurled roller. The 8″ vacuum cups feature a continuous seal for a reliable hold on heavy stone. powerful compact vacuum pump maintains pressure for all cups and runs on AC power or AA batteries for any installation situation. Improved pump technology provides a stronger hold to very textured or porous materials. The 6″ vacuum cups feature a continuous seal, so they won’t lose suction if loss of power occurs. Eight seam levelers slide on rails for custom placement and have vinyl-capped, non-spinning feet to prevent scratches. Recommended for porous and non-porous materials. New vacuum pump for 2015 model Now runs on eight AA batteries when electricity is not available; improved vacuum hold on very porous or textured surfaces; reengineered, ultra-durable housing (more resistant to dust, water, debris, and overheating) PRODUCT HIGHLIGHTS Joins, A levels, and flattens stone to deliver superior seams, every time Entire seam is accessible for epoxy application or removal 8 vacuum cups feature a continuous seal for strong, reliable hold, and won’t lose suction if loss of power occurs Eight leveling feet adjust easily to fine-tune the seam and eliminate unevenness of warped stone Vinyl-capped leveling feet slide for custom placement, but won’t scratch surfaces Heavy-duty, compact vacuum pump runs on AC or battery power Easily converted to manual seam setters Quick-connect air tube fittings for easy setup Durable anodized billet aluminum and stainless steel components.