They are actually stronger than most metal and chemical anchors because the all plastic plug bonds through friction to concrete

13/32 Heavy Duty Jobber Drill Bit

#24 Heavy Duty Drill Bit - Stubby Length

#2 Heavy Duty Jobber Drill Bit

#48 Heavy Duty Drill Bit - Stubby Length

5/8-11 x 5 1/2 Grade 8 Hex Cap Screw Plain Domestic USA (70) 7/8-14 Socket Set Screws Cup Point Alloy They are actually stronger than5 8 11 x 5 1 2 Grade 8 Hex Cap Screw Plain Domestic USA (70). Grade 8 Hex Cap Screws are manufactured in the USA from medium carbon alloy steel. In diameters 1 4 to 1 1 2 inches our Grade 8 material meets or exceeds SAE J429 Grade 8 specifications. Diameters over 1 1 2 inches meet or exceed ASTM A354 Grade BD. All material is manufactured with rolled threads. Yellow zinc plated bolting will meet or exceed ASTM F1941. Typical hardness on diameters 1 4