BCD: 104mm ,<br> Shape : Round , <br> Thickness: 4mm,Durable. <br> Diameter:150mm ,<br> Weight:Approx 59.2g(0.13lb)<br><br> Bolt size:M8*16.8mm Long bolts<br> Bolt Spacer thickness:2mm<br><br> Fit For 104 BCD 30 Tooth , 32 Tooth , 34 Tooth Chainring<br><br> Use for Single Speed/Double/Triple Crankset Refitted into 1x,2x System,Considering interference,if your crankset is single speed design ,please add spacer between chainring and bashguard before use<br><br> Package:<br><br> Bicycle Chainguard* 1pcs<br> MTB Crank Set Bolts* 4 Sets<br> 2mm Thickness Bolt Spacer*4pcs<br>