uxcell Brass Equal Nipple Male Union Adapter 1/2 to 1/4 for Pneumatic Air Pipe Product Name : Hex Nipple;Male Thread Dia. : 1/2" x 1/4" Overall Length : 28.5mm / 1.12";Material : Brass Color : Gold Tone Net Weight : 30g Package Content : 1 x Hex Nipple