I tried out this industrial drill bit accessory and found it to be quite useless. THROUGH trial and error, i found that it was difficult to use and did not align the drill bits as it should have .Despite its seemingly useful function, it simply did not do the job as it was intended. On the plus side, it is made of high-quality materials. However, this does not justify its high price for its lack of functionality. Overall, I would not recommend this product to anyone in the Industrial and Scientific field looking for a reliable drill bit accessory..