304 Stainless Steel Lock Nut 1/4" 3/8" 1/2" 3/4" 1 1-1/4" 1-1/2" 2" BSP Hexagon Locking Cap Of Water Tank Joint Pipe FittingsHome Improvement > Plumbing$0.39 (≈ CA$0.54)In stockSold by AliExpress WWTo Store