21 PC BLACK OXIDE DRILL BIT METAL INDEX SET.

Features and Benefits:

• Mountain Black Oxide Drill bits are made from industrial grade high speed steel
• Oxide treated to resist heat and add lubricity while cutting harder materials
• 135 degree split point will not walk or wander at the starting surface
• Set includes: 1/16" to 3/8" by 64ths
• All drills are contained in a metal index set

Designed to cut all types of metals, wood, plastics and fiberglass.