<b>Are you still worried about dropped a chain?</b><br> Don't worry, our chain is anti-off chain.<br> <br> <b>Are you still worried about the trouble of installing the link?</b><br> Don't worry, our chain ring is easy to install.<br> <br> <b>Are you still worried that the chain ring you bought is not suitable for your bicycle?</b><br> Don't worry about our chain ring being suitable for most 104BCD bikes.<br> Will this work with SHIMANO XT/XTR/DEORE/ALIVIO/ACERA/ALTUS crank and M370 Series/M410 Series/M610 Series/M670 Series/M780 Series.Compatible with 1x8/9/10/11/12 speed drivetrain chains.<br> <br> <b>Material:</b> Aluminum Alloy 7075-T6<br> <br> <b>Shape: </b>Single Plate Round<br> <br> <b>Teeth:</b> 40T / 42T / 44T / 46T/ 48T / 50T / 52T<br> <br> <b>Size: </b>104BCD / BCD=104mm<br> <br> <b>Color:</b> Black Red<br> <br> <b>Weight:</b><br> 40T about 81.5g<br> 42T about 87.5g<br> 44T about 95.8g<br> 46T about 102.6g<br> 48Tabout 112.6g<br> 50Tabout 121.7g<br> 52Tabout 131.6g<br> <br> <b>Diagram Note:</b><br> “+” teeth correspond to the wide part of the chain.<br> “-” teeth correspond to the narrow part of the chain.<br> <br> <b>Note:</b><br> 1.Please determine your crank 104 BCD specification carefully before buying.<br> 2.Fit for various kinds of bike crank which BCD is 104mm,Will this work with SHIMANO XT/XTR/DEORE/ALIVIO/ACERA/ALTUS crank and M370 Series/M410 Series/M610 Series/M670 Series/M780 Series.Compatible with 1x8/9/10/11/12 speed drivetrain chains.But not compatible with Shimano XT M7000/ M8000 / M9000 Series Cranks.