M8-1.25 long Clip-On Nuts, A barrel with multiple threads ensures secure thread engagement. Also known as U-style clip-on nuts, these nuts firmly clip onto the edge of panels and stay secure.Stainless steel 18-8 (304) provides high corrosion resistance in wet environments. For Panel Thickness Range: 0.8mm to 4.5mm M8X1.25mm Long Material:Stainless steel 18-8 (304) 20 Pcs Center Of Hole To Edge:20mm