The Hillman Group 47701 10 x 1-Inch Self Piercing Sheeter The product is LB 1x10 Sheeter Screw Easy and simple use kit The product is manufactured in China Self Piercing Screws penetrate metal and tap their own mating threads to eliminate the need for prepunched holes Drill point requires no pilot hole Steel/Zinc Plated Quantity per pack: 1LB