Our TRS 2-Bolt is designed for the enduro-ist on a budget. Sporting a steel backplate, this steed will deliver long-term durability like no other, albeit, at the expense of a little extra weight. But the money you'll save using steel instead of aluminum (or carbon fibre) will be well-worth it for the extra pub money. Our compact upper slider utilizes polycarbonate parts that are solvent resistant and won't get brittle or crack after exposure to lubes and cleaners. Its co-molded soft rubber interior to cut down on noise, and it opens quickly and easily without tools. This chainguide has two configurations: one that mounts to ISCG05 tabs, and one that is specific to the Shimano STEPS e-bike system. Note: the two are NOT interchangeable. Specification Backplate material: Steel. Drivetrain protection: No bash. Chain retention: Adjustable slider with co-molded soft rubber for sound reduction, opens without tools. Capacity: 28-38t (ISCG05), 34-38t (STEPS). Features: Solvent-resistant polycarbonate, adjustable upper slider opens without tools. Color: Silver and Black. Weight: 62g. Five Year Warranty - Guaranteed to be free from defects in materials or workmanship for 5 years after original purchase.