Obviously this sprocket is small with it´s 25 teeth, but some of it´s qualities are even smaller details. First of all we use shorter teeth then all other bike companies. This gives you better protection against deformed teeth when hitting curbs or rails. To make this possible without sacrificing the life span of the sprocket we developped our own teeth profile - but we can not say too much about the details here. We have been building BMX sprockets many years ago, where we earned very well recognition with this teeth shape. Again we use highest grade heat threated 7075 T6 aluminum to make this product strong and light - only 68g. Delivered with precision spacers for 19 and 22 mm spindles, 23,75 mm hole.