12 Pack 3 Inch Boring Head With R8 Shank And 3 Quarter Inch Carbide Boring Bars Set For Milling Precision Hole Sizing Heavy Duty Metalworking And Professional Grade Performance

12-Pack 3 Inch Boring Head with R8 Shank for Precise Milling
3 inch boring head with R8 shank, 12x 3/4 inch carbide bars

This 12-pack boring head set includes a 3 inch head, R8 shank, and twelve 3/4 inch carbide boring bars. Designed for milling, shaping, and drilling applications, it delivers precise hole sizing and heavy-duty metalworking performance.

3 inch boring head size
Boring bar hole and cross hole dia: 3/4 inch
Maximum offset: 1 inch
Includes R8 shank
12 x 3/4 inch carbide boring bars
Micrometer lead screw with 0.0001 inch reading
Hardened and ground adjusting screw
Made of grade tool steel
Comes with plastic case for safe transport

What is a 3 inch boring head with R8 shank used for in milling and precision hole sizing? This handy tool is designed to deliver accurate hole sizing with repeatable results.
– Handy for achieving tight tolerances in milling and boring work