Zinc plated steel threaded inserts.M6 Regular Threaded Insert (Rivet Nut) - Pack of 50• Regular zinc plated threaded inserts.• Model No. TIRM6Model No: TIRM6:Brand: Sealey:Grip Range: 0.5-3mm:Nett Weight: 0.00kg:Pack Qty: 50:Thread Size: M6 x 1mm:Type: Regular:PTDSEATIRM6