7 pc High-Speed Steel Counterbore Set, with Built-in Pilot, 3 Flute, No. 6 to 1/2'
$76.19
$76.19
$
35
.99
$35.99
About this item
- 3 Flute; Spiral Flute
- Used to create counterbore holes in a workpiece to allow for socket head screws to sit below or flush with the surface of a workpiece
- Included Sizes (Bolt Size): No. 6, No. 8, No. 10, 1/4", 5/16", 3/8", 1/2"
- High-Speed Steel; Excellent toughness, wear resistance, and red hardness
- Each counterbore comes with a built-in pilot to maintain alignment while drilling
