Pratico Practical tool: The manual belt tensioner is suitable for packaging, storage, etc. It is an ideal manual tool for strapping, sealing and packing. Its depth of penetration can be adjusted to seal the bottom (deepen) and the sealing surface (surface). Pratico Practical tool: The manual belt tensioner is suitable for packaging, storage, etc. It is an ideal manual tool for strapping, sealing and packing. Its depth of penetration can be adjusted to seal the bottom (deepen) and the sealing surface (surface). Pratico Practical tool: The manual belt tensioner is suitable for packaging, storage, etc. It is an ideal manual tool for strapping, sealing and packing. Its depth of penetration can be adjusted to seal the bottom (deepen) and the sealing surface (surface). Efficient and labor: The tiger's belt tensioner teeth are automatically returned, which can reduce fatigue and work faster. The belt tensioner has a strong clamping force and can be formed simultaneously. You can get great tension with a small amount of strength. How to use: During operation, adjust the position of the main and left and right flaps and the position of the top and bottom nail heads according to the flap of the carton. During adjustment, make sure that the left and right deflectors cannot be tightened too tightly and the cardboard should be easily inserted and removed