Brazing is a commonly used technology in producing diamond discs , the segment is bonded tightly to the steel base by brazing under high-frequency electrical current . it features fine quality and attractive price . and is an excellent substitution of laser welded cutting discs. We produce following size: Diameter center hole segment Of out dimensions 4" 5/8" 4/5" 7/8" 2.2x7.5 4.3" 5/8" 4/5" 7/8" 2.2x7.5 4.5" 4/5" 7/8" 2.4x7.5 5" 4/5" 7/8" 2.4x7.5 6" 4/5" 7/8" 2.4x7.5 7" 7/8" 1" 1 1/5" 2.6x8 8" 7/8" 1" 1 1/5" 2.8x8 9" 7/8" 1" 1 1/5 2" 3.1x8