TengTools Screwdriver - TPX Type For TPX type screws with tamper-proof heads. Round shaft of TT-MV PLUS steel. Phosphated black tip. Ergonomically designed two component handle with hanging hole. • TPX No.: TPX 40 • Max Head Width: 6.65mm • For Screw: M7-8 • Blade Length: 100mm • Handle Length: 120mm