Size (Outside dia.). BSP Male Thread 1/8 1/4 1/2 3/8 1 Brass Hex Bushing Pipe Nipple 2PCS Joint. 10PCS PC Pneumatic 4mm 6mm 8mm 10mm Hose Tube Air Pipe Connector Brass Fitting. Can work for 3mm Stainless steel plate and can quickly punching the precise holes in Steel, Stainless Steel,iron, Copper, Brass, Aluminum, Fiberglass, Formica And Other Laminates In Seconds.
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