Expands the size range capacity of a 1/2 inch portable drill chuck

Star drive prevents cam out and stripping for improved drivability

5/8-11 x 10 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (50)

9/16-12 x 5/8 Socket Set Screw Cup Point Alloy

#47 Heavy Duty Drill Bit - Stubby Length

1 1/4-7 x 4 Grade 8 Hex Cap Screw Plain Domestic USA (5) 3/4-10 Grade 8 Hex Cap Screws Yellow Zinc Plated Expands the size range capacity1 1 4 7 x 4 Grade 8 Hex Cap Screw Plain Domestic USA (5). 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 to 2