Criterion Boring Head Set Model 1400A 3'' Body Diameter; 3/4'' Bar Size; R8 Shank

Criterion Boring Head Set -- 3'' Body Diameter; 3/4'' Bar Size; R8 Shank Bridgeport Boring Head Sets Criterion Machine Works has made available a number of boring head sets specifically selected for Bridgeport Mills. These sets include a standard Criterion Boring Head with an R-8 shank and a wide range of boring tools and boring bars. The boring tools are available in high speed steel or in either a C-2 or C-6 grade of carbide. C-6 Standard, C-2 by special order only. Features: Shank Style: R8 Head Diameter: 3 Thread: 1-1/2-18 Brand Name: Criterion