I bought some new Shimano cranks with torx sprocket bolts which I didn't like and needed a sprocket wrench which I don't like either. These Truvativ sprocket bolts use a 5mm hex on the bolt and a 6mm hex on the nut, making installing and tightening these bolts less of a hassle. The bolt is steel and the nut is aluminum, so it is important to tighten these bolts carefully to avoid damaging the aluminum nut. I started with 8Nm and will test it when I drive a few more kilometers. If there are any problems, I will update this review. They are silver and black. I use silver with black chains and vice versa.
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