【Stainless steel staples】304 stainless steel makes the staples keep the stronger rust & corrosion resistance than galvanized staples, it is suitable for outdoor use. 【Good variety in different 5 sizes】The 5 sizes for 18 GA norrow crown staples ( 1/4" width:1/2"-320 pcs ,3/4"-320 pcs ,1"-320 pcs, 1 1/4"-320 pcs, 1 1/2"-320 pcs), total 1600-count, Per stick:80. 【Fit a variety of brands of 18 GA stapler】 The staples fit most brands of 18 gauge 1/4" norrow crown stapler or staple gun very well. 【Strong penetrability】The T-shaped head and Chisel point design with strong penetrability lets you use staples very easy,and you will have no jams and buckles, and interruptions. 【Wide applications】It is a ideal choice for heavy-duty stapling jobs such as housing insulation & wrap, roofing felt, fence wiring, weather stripping, boarded floor & baseboard assembly, upholstery . 【Our Promise】Please let us know if you are not 100% happy with your purchase,and we will provide either a full refund or exchange.