Product details:

Glamos Wire Products Square Landscape Staple, 6 in Leg Length, 1 in Wire, 11 ga Steel, 6 x 1 x 6 in, For Sod Fabric Irrigation or Anything Else You Need to Anchor. Heavy duty 11 ga steel with chisel tips. Heavy duty 11 ga steel with chisel tips. Glamos wire landscape staples use these for sod fabric. 100% American made.