DIRT 3-way chain guide (dirt 3 chain catcher) MTB chain guide for Shimano® triple crank sets. Safely prevents the chain from jumping down. Compatible with: Shimano® triple cranksets, bottom bracket with external bearings (Hollowtech, E-Type or BB-mount inner bearing), the chain guide is mounted on the bottom bracket instead of a 2.5 mm distance ring, can not be used together with E-Type front derailleurs. Small chain ring 22-26 teeth. Material: 6061 T6 Aluminum Anodized Weight: 17g

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