PRODUCT SPECIFICATIONSMODEL NOFC-M6100-1SERIESDEORE M6100 SeriesColorSeries ColorRear speeds12Compatible chainHG 12-speedChain line (mm)52O.L.D.|Thru (mm)142, 148O.L.D.|QR/Nut (mm)135, 141P.C.D. (mm)DirectSpider/Gear arms4Chainring combination30T, 32TQ-factor (mm)172Crank arm length (mm)|165✔Crank arm length (mm)|170✔Crank arm length (mm)|175✔Optional chain guard|Without chain/bash guard✔2-PIECE CRANKSET✔Compatible bottom bracket type|Outboard✔Recommended bottom bracket|Threaded (normal)BB-MT501Recommended bottom bracket|Press-fitBB-MT500-PAThreaded bottom bracket shell width (mm)|68✔Threaded bottom bracket shell width (mm)|73✔Crank fixing screw included✔