Precision CNC machined 7075-T6 alloy Shifting ramps and stainless steel pins on outer rings 110mm asymmetric bolt spacing (ABS) intended for use with V1 hidden bolt cranksets Black anodized with CNC machined silver reliefs Laser etched logo 110mm 5-bolt ABS 50T Ramped/Pinned 7075AL 10/11s Black/Silver 10/11sp StandardUPC/EAN/GTIN: 400310069450