VTT Fixing Tray (Four-Pincer Type)【VTT-TPD-NT】The VTT Fixing Tray was designed to create a stable, secured working space for VTT training sessions. Adjust the tripod base as necessary before fixing your VTT model to the tray. The four pincers used to secure the VTT can be adjusted from side to side in addition to how tightly they hold the tissue down. Since the pincers are made of metal, you can use a grounding cable on any one. Recommended uses: Training with basic VTT models or types.