ITEM NAME:5PCS 1/8" PT Male Thread to 4mm Tube Push in Connect Straight Quick Fitting H3V4 5PCS 1/8" PT Male Thread to 4mm Tube Push in Connect Straight Quick Fitting H3V4 Item Name : Quick Fittings;Total Size : 19 x 10mm/0.75" x 0.39"(L*W) Thread Diameter : 9.5mm / 1/8" PT;Inner Diameter (Blue End) : 4mm/0.16" Main Material : Chrome Plated Brass, Plastic;Color : Gold Tone, Blue Weight : 30g Designed for Polyurethane or Nylon tubing. Even after installation, the direction of the tube can be changed freely. Elliptical release ring help to connect tube easily by manual, no special tools required. Outside (and Inside where applicable) hexagonal wrench tightening. This Quick fittings are only used for industrial automatic apparatus and can not be applied on any medicinal equipment. Package Content : 5 x Quick Fittings Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing.The measurement allowed error is +/-1-3 cm.