We are diversifying into hardware distributor and we are looking for a reliable supplier of gypsum drywall black screws who can supply us on a monthly basis with the following sizes: 1/8 in diameter for all for wood and for steel 1/2 inch lenght 1 inch lenght 1 1/2 inch lenght 2 inch lenght Initial order is around 10 tons and will increase every month. Please give in your best price as I will not ask for another quotation.