It's perfect for drilling in concrete

7/16-20 x 2 3/4 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (300)

1 1/4-7 x 10 A307A Hex Bolt Plain Steel

Drilling thickness capacities: up to

3/16 x 3 Mushroom Spike Zinc Plated (100)

10-16 x 1 Phillips/Square Drive Pancake Head 410 Stainless Self Drilling Screw Strong Shield Coated - 1 lb (125) 1-8 A307A Hex Bolts Zinc Plated It's perfect for drilling inThis 1 lb pack of 410 stainless steel self drilling screws feature a 10 16 x 1 Phillips Square Drive Pancake Head design for secure fastening. Strong Shield Coated to protect against corrosion and rust, these screws are made to last under heavy use.