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3 D4 20 50 4T 3 1R0
5 D4 25 50 4T 5 3R0
it is correct that the tip angle of the fixed point drill should be greater than the tip angle of the secondary drill bit
Spray coating to enhance tool corrosion resistance
Hex S=6~10mm
BB Center Drill Carbide Diameter:5 3 D4 20 50 4TBB Center Drill 60 is used for producing center holes in work pieces which require machining between centers. Right hand cut Carbide A form (d1*L1*D*L) 1*1. 6*4*50 1. 5*2. 1*4*50 2*2. 6*6*50 2. 5*3. 1*6*50 3*4*8*50 4*5*10*60 5*D10*70 6*D12*75 HI, welcome to BB official store. We are professional manufacturer ,development and production of machining tools. We provide various tools for you . You can follow us and see more. You have free choice of
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