uxcell M12x1.75mm Stainless Steel Nylock Nylon Insert Hex Lock Nuts 10pcs Thread Size: M12 x 1.75mm(Dia*Pitch); Product Name: Nylon Lock Nut Material: 304 Stainless Steel; Weight: 149g Package Content: 10 x Nylon Lock Nuts; Main Color: Silver Tone Height: 12mm/ 0.47" Hex Size: 19mm/ 0.75"