Male Tapered Hose Tail Fittings – BSP & BSPTBuilt for reliable, leak-free connections in compressed air systems, these male tapered hose tail fittings are a workshop staple. The tapered thread bites firmly into female BSP ports, creating a pressure-tight seal without the need for excessive thread tape.How to Choose Your SizeYou need to match two dimensions: Thread Size – the BSP size of the port or fitting you're screwing into (e.g. 1/4" BSP) Hosetail Size – the internal bore (ID) of your air hose (e.g. 8mm) Hose ID Metric Imperial Equiv. 3mm ID Hose 3mm 1/8" 5mm ID Hose 5mm 3/16" 6mm 6mm – 8mm ID Hose 8mm 5/16" 10mm 10mm 3/8" 12mm 12mm 1/2" 19mm 19mm 3/4" 25mm 25mm 1" 32mm 32mm 1-1/4" 38mm 38mm 1-1/2" 50mm 50mm 2" Key Features Tapered male thread (BSP / BSPT) for a secure, self-sealing fit Available in brass and nickel-plated brass for corrosion resistance Thread sizes: 1/8" to 2" BSP Suitable for compressed air, water, and other non-corrosive fluids