uxcell 1/2BSP to 3/8SP Male Thread Brass Pipe Hex Nipple Fitting 4Pcs Weight: 64g; Main Material: Brass Package Content: 4 x Hex Nipple; Product Name: Hex Nipple Main Color: Gold Tone Overall Size: 22 x 20mm/ 0.9" x 0.8"(D*L) Thread Size: 20mm/ 1/2BSP to 16.5mm/ 3/8SP