7 Inch Forstner Drill Bit Extension for 3/8" Hex Shank

Feature:
1)The Drill bit extension gives you additional 5-1/2 inches of reach to bore deeper into your projects.
2)The collet inside diameter is 3/8 inch(9.7mm),designed to accept drill bits with shank sizes of 3/8 inch or slightly smaller;

Specification:
Material: High-carbon steel
Hex Shank Dia.: 3/8-inch;
Extend Length: 5-1/2 inch;
Total length: 7 inch.

Package:
1x Drill bit Extension
1x Hex Key