Description SPIDER-SPLINE DRIVE (SINGLE CHAINRING) -Designed to provide optimal chainline when using a Profile Euro Outboard bottom bracket. -Places the single chainring over the external bearing cup. -Machined from billet aluminum plate. -Supplied with a CrMo Steel adapter insert already pressed in. Three styles of single chainring spider available: -4 Bolt (104MM BCD) for 19mm splined axle -4 Bolt (104MM BCD) for 22mm splined axle -5 Bolt (110MM BCD) for 19mm splined axle Colors: silver, black, red, blue, gold, green, purple(19mm Axle only) Weight: 4-Bolt: 74g/2.6oz 5-Bolt: 83g/2.9oz
