The shimano slx m670 10 speed triple chainset offers fantastic value for money perfect for riding aggressively on the trails this mtb chainset utilizes hollowtech technology to provide a super rigid and sturdy design which is surprisingly light weight with a hollowtech ii integrated bottom bracket design a wider bearing placement with larger axle diameters ensure that the shimano slx m670 is stiffer and more durable than ever before a drilled steel and carbon composite middle chain