answer an Email Daniel, Many thanks for your suggestion, that is very enlightening and diligent work for us. I have some thought as follow: 1. A small gap between the hex shaft and the shaft it looks more terrible than now. I still prefer the status quo. But for now, this gap can’t affect the function of the screwdriver. 2. It will increase the difficulty of machine the hex hole. By the way, the more precision of the hex, the better straightness of two shafts. In fact, it’s hard to machine the Hex transition fits. 3. It’s hard to match drilled the hole at assembly. The hardness of 465 SS is 46-54HRC, H950, larger than 17-4 material. That will need to customize drill bit and reamer. At the same time, the drill bit breaks easily. It's best to machine the pin-hole before assembling it. 4. If both components were changed to titanium, the cost will increase. Reduce the weight by 2 - 3 ounces (60 - 100 grams) that will similar with our launched drivers. Thanks, Oscar 中文(Chinese)： Daniel, 非常感谢你的建议，那是非常有启发和勤奋的工作对我们来说，我有一些想法如下： 1. 两个杆子之间的小间隙看起来比现有的间隙更糟糕，我还是倾向于保持现状，目前的gap就如上次所说至少对功能无影响。 2. 将会增加六角孔加工的难度，六角孔的配合精度越高，两个杆子的直线度越好，但是事实上，很难实现六角孔的过渡配合。 3. 很难在装配的时候配作销钉孔，465材料的硬度在46-54HRC，H950, 大于17-4材料的硬度，需要定制钻头和铰刀，同时，这个钻头还很容易折断，最好是能在装配前把销钉孔加工好。 4. 如果两个部件都改为钛合金成本将会增加，减少60-100克后和我们已上市的起子接近