Dear sir , We are in the market for quick coupler . We are leading suppliers of pneumatic items in our province and this we buy for resale purpose . We request you to offer your best price . Following is our requirements and our requirements will increase subsiquently SP - 20 2000 PCS SP - 30 500 pcs SP - 40 2000 PCS SH - 20 1000 PCS SH - 30 500 PCS SH - 40 500 PCS SM - 20 2000 PCS SM - 30 500 PCS SM - 40 3000 PCS this is our present requirements Please give your best offer Thank you With regards