Dash 4 to Dash 16 Wrench Set SpecificationsThese Dash wrenches are essential if you decide to assemble your own Dash hoses. Thanks to their specific hexagonal shape they allow you to safely tighten and crimp your Dash fittings without damaging the aluminium socket for perfect results everytime !Dash 4 wrench (grey) : 14.4 mmDash 6 wrench (black) : 17.5 mmDash 8 wrench (blue) : 22.2 mmDash 10 wrench (purple) : 25.4 mmDash 12 wrench (red) : 31.8 mmDash 16 wrench (gold) : 38.1 mm