Gardner Bender MDI-1550Y PVC Insulated Metal Staple, 1/2 x 1-Inch,40-Pack,Packaging may Vary The product is 40PK1/2x1 MTL Staple Easy to use The product is manufactured in China It is 40 Pack 1/2" x 1"PVC Insulated Metal Staple High Impact PVC Insulation Protects Cable From Damage Due To Mis-Hit & Overdriving