uxcell 1/4" PT F/F Female Thread Hex Rod Coupling Straight Adapter Fittings 5 Pcs Product Name : Hex Rod Coupling;Type : Straight Material : Brass;Color : Gold Tone Female Thread Size : 1/4" PT;Hex Size : 20 x 15mm/ 0.7" x 0.5"(H*Max.D) Net Weight : 65g Package Content : 5 Pcs x Hex Rod Coupling