General description 50Pcs Male / Female End Union Brake Pipe Screw Nuts M10 x 1mm 3/16 Inch OD Copper Tubes Line Fittings Metric. This brake line fitting kit is designed for 3/16 inch copper brake pipes, ensuring a reliable connection for your braking system. The fittings are zinc-coated for enhanced corrosion resistance, providing durability and longevity. Technical specifications Item Type: Nuts - Bolts Size: M10 x 1mm Material: Iron plating zinc Package Contents: 25 x Female brake pipe joints, 25 x Male brake pipe joints Measurement allowed error: +/- 1-3cm Other information