Granite Seam Setter, 2-Pack, 6-In Vacuum Cups, Bag

Granite seam setter clamps and levels heavy slabs fast, helping you close gaps and align edges for cleaner countertop seams. This 2-pack set uses 6-inch vacuum suction cups with a manual pump to create a stable grip on smooth, non-porous surfaces like stone, marble, tile, and glass. Fine-tune knobs control seam spacing and height so you can dial in flush joints with less rework during countertop installation.

• Delivers up to 530 lb vertical suction per unit with a 6 in nitrile rubber vacuum suction cup and pump-assisted hold.


• Adjusts seam width and height using 3 fine-tune knobs for precise seam joining, leveling, and edge alignment.


• Builds durability with stainless steel tube handles, aluminum components, and rust-resistant, wear-resistant knobs.


• Includes a dustproof cup cover and anti-static dust cloth to keep contact surfaces clean for more consistent suction.


• Stores and carries easily with a 600D Oxford cloth tool bag for jobsite protection and portability.

Designed for installers who need repeatable slab alignment, these countertop seam setters help stabilize panels while you set, shim, and tighten for a smooth transition across the joint. Use on clean, flat, non-porous surfaces to maximize vacuum grip; wipe both the suction cup and work area before pumping. With two units in the kit, you can control larger sections and keep seams steady during layout and finishing. Grab yours today and streamline your next stone, marble, or tile install.

• Quantity: 2-pack


• Max product dimensions (each): 17.13 × 6.10 × 4.33 in (435 × 155 × 110 mm)


• Suction cup size: 6 in (152 mm)


• Vertical max suction (each): 530 lb (240 kg)


• Product weight: 9.48 lb (4.3 kg)


• Suction cup material: Nitrile rubber


• Handle material: Stainless steel tube


• Rod design: Dual rod


• Angle adjustment: 180°


• Included accessories: level, replacement air pump, hex wrench, open-end wrench, anti-static dust cloth, protective cup cover, 600D Oxford tool bag


• Main colors: Orange, black, silver, blue