10Pcs Brass Hex Lock Nuts BSP 1/8" 1/4" 3/8" 1/2" 3/4" 1" Female Thread Flange Nut Hexagonal Shank Cap Water Tank Joint

10Pcs Brass Hex Lock Nuts BSP 1/8" 1/4" 3/8" 1/2" 3/4" 1" Female Thread Flange Nut Hexagonal Shank Cap Water Tank Joint

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