ISO 7040 with brown ring Steel M10, 1000 pcs. M12, 2000 pcs. M16, 2000 pcs. M20, 2000 pcs. M24, 2500 pcs. ISO 7042 Steel M10, 500 pcs. M12, 500 pcs. DIN 934 Zinc-plated steel 5 M12, 1000 pcs. DIN 7980 Zinc-plated steel D12, 1500 pcs. Please send best offer and shortest delivery time