6 mm hole 0.32 cm PT male thread for pressing straight in the tube Quick Fittings 5 pieces - Item Name: Quick Fittings;Total Size: 20 x 12mm/0.8" x 0.47" (L*W) - Weight: 29G - Package Content: 5 x Quick Fittings - Thread: 9.5mm/0.32cm PT;(End Blue) inner diameter diameter 6mm/2 0.61 cm. Main material: chrome-plated brass, plastic. Colour: gold tone, blue