General description This Draper 54417 1/2' BSP Male Nut PCL Euro Coupling Adaptor comes with a 20-Blade 0.4-6mm TPI Screw Pitch Gauge Set (Model 51070). The product features folding leaves, each individually stamped with precisely formed thread profiles, making it suitable for various DIY and home improvement projects. Sold loose, it offers flexible use. Technical specifications Number of blades: 20 Blade sizes: 0.4mm, 0.45mm, 0.5mm, 0.6mm, 0.7mm, 0.75mm, 0.8mm, 1.0mm, 1.25mm, 1.5mm, 1.75mm, 2.0mm, 2.5mm, 3.0mm, 3.5mm, 4.0mm, 4.5mm, 5.0mm, 5.5mm, 6.0mm Compatibility and accessories Designed for use with compatible tools and fittings that match the thread profiles and blade sizes. Installation Install the blades into the appropriate tool or holder following the manufacturer's instructions. Ensure proper alignment and secure fitting before use. Usage Ideal for precise cutting, shaping, or finishing tasks in DIY and home improvement projects. Use with compatible tools to achieve accurate