Boring Heads

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Boring Heads High quality, excellent performance and practical design at an affordable price. Maximum rigidity is assured when a boring bar holder is used in an offset position. Ha rdened and ground adjusting screw along with our wide base design guarantees long life and trouble-free use Item Actual Size(D) Overall length(H) Boring bar hole size(d1) Center distance between holes Offset Thread Mount 0350-0002 2" 2-1/2" 1/2" 5/8" 5/8" 7/8~20" 0350-0003 3" 3-5/32" 3/4" 15/16" 1" 1-1/2~18" 0350-0004 4" 3-43/64" 1" 1-1/4" 1" 1-1/2~18" Show more