Full Pin technology uses eleven lightweight, stamped steel cogs and one 50-tooth aluminum cog held together with high-strength stainless steel pins Eagle technology provides an expanded, optimum, gear range making you fast on the flats, giving you control on the climbs and unleashing your speed on the descents Compatible with all levels of Eagle drivetrain systems Optimized gear steps across entire range Open design aids in mud clearance 10-50t 12sp 10,12,14,16,18,21,24,28,32,36,42,50 BlackUPC/EAN/GTIN: 710845804748