20 pcs of Metric Stainless Steel Blind Insert Rivet Nut Rivnut [M3 M4 M5 M6 M8 M10 M12] Size: M3 M4 M5 M6 M8 M10 M12 Material: 304 Stainless Steel Grip Range:0.5-6.0mm It's brand new, good quality & high performance Free Shipping & the deliver time to USA is approx. 10-18 days after the shipment date.