The Hand Gripper and Bi-Active Hand Gripper models have Teflon coated jaws, which allows welding of Polyethylene or Polypropylene bags.
The Complex Hand Gripper model has the two grooved jaws directly in contact with the bag and is only suitable for complex materials.
Being so small and light (600 grams), these tongs are very handy. It is enough to close them for a few seconds to weld a bag.
For better pressure and greater comfort, they can be placed on a table and operated by pressing with the palm of the hand, or mounted on the edge of a table with the Stand and Pedal accessory and operated with the foot.