Based on my observations as a hesitant buyer in the Industrial and Scientific realm, I must express my disappointment in this gear .The pros of this product are hard to find as it failed to meet my expectations. On the positive side, it did have a sleek design. However, the cons outweigh any aesthetic MERITS. The power transmission capabilities were underwhelming and did not live up to the product description. I would not recommend this product to anyone in need of a reliable gear for their power transmission projects..