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5 D12 30 75 4T 12R0
Helix Angle:35 deg
-You have free choice of collocation
1 D4 12 50 3T 4R0
1 D4 8 50 4T 4 1
BB Micro Drill (0.15mm-2.9mm) D=3mm Diameter:0.35mm 5 D12 30 75 4TBB Mirco Drill 1PCS The whole bit is made of Solid Carbide, which makes the bit more durable. But it also makes it easier to break, so it's forbidden to use electric hand drills and unstable machining environments. Application Steel, stainless steel, cast iron, die steel, circuit board,acrylic and so on. Diameter of shank : 3mm or 4mm Recommended Cutting Conditions *Reference parameters are used as the general standard and need to be adjusted
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