TX/TPX -Spanners in Set Teng Tools TTTX7 TC-Tray Modular System – GET ORGANISED WITH TENG! Tray Size: 265 x 142 x 50mm Tray Weight: 0.7kg TX/TPX-keys with T-handle. For internal TX/TPX heads (long key ends also for tamper proof screws). Supplied in a plastic TC tray with removable lid. Fits in Teng Tools tool boxes and roller cabinets. Key No TX/TPX: 10 15 20 25 27 30 40 For max. head width: 2.74 3.27 3.86 4.43 4.99 5.52 6.65mm For Screw M: 3-3.5 3.5-4 4-5 4 4.5-5 4.5-6 6-7 7-8