Custom-made Micro Boring Bar and Tool Holders with precision up to 0.005mm   Our Rotary Micro Boring Bar and Tool Holder (USA patent pending) adopts turbo and worm gear transmission mechanism to fine tune the feed amount of the cutter by as little as 0.005mm. The most distinct advantage of this system is that it can alleviate the tolerance requirement of the tool holder itself, therefore reduce the production cost of the tool holder.   We can provide total solution for customers' fine boring requirements. In order for us to offer the solution and pricing, we need to know the following information:   1. The diameter of the bore. 2. The requirement of the surface finish of the work to be produced. 3. The material of the work to be produced. 4. The type of tool holder. (BT, CAT, HSK, VDI or others)   With the above information, we will advise you of what kind of cutter you may use, and we will design the micro boring bar and tool holder for you.   We assure that we will offer the highest quality at very competitive prices.