Bostitch 7/32 in. W X 1-3/8 in. L Stainless Steel Finish Staples 18 Ga. 1000 pk

The "crown" of the staple is the part that still shows after you punch a staple through the materials you are fastening together. The "legs" are perpendicular to the "crown" and parallel to each other and they penetrate the materials.