Industrial Fittings 4mm to 3mm Rotatable Universal Joint Connector Product Name : Universal Joint;Type : 4mm to 3mm Side Thread Diameter : 3mm/ 0.12";Ovall Size : 2.1 x 0.9cm/0.8" x 0.35"(L*D) Material : Metal;Color : Silver Tone Net Weight : 8g Package Content : 1 x Universal Joint