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Features: chainring set 46/30 - 48/32 dentiMaterial & Finish: cnc machined 7075 Txxx Aluminum. Long-lasting construction, type II anodizingOvality: Optimized to each size separately. 30T- 9% ; 32T- 8%, 46/48 - 10-11.2% ; Timing of 108 -109.5° after TDC (top dead center) - Ideal for road climbing. Patent Pending Compatible: Road compact standard 110mm...