This is a 2 LB unit of 430 Stainless Steel refractory reinforcing needles. They are 1" long and have waves to help hold the refractory material together. You often get cracks when using refractory castable or have high impact or wear areas, these stainless steel fibers when mixed at 3 to 5% addition to your castable give greatly improved structural strength. Picture is not 2 lbs , just a sample.