Specialized rib cage ii black one size MFPN=BAA0785K The Promax Render DSK 717 is The Promax Render DSK 717 is a proven reliable cable actuated mechanical disc brake caliper that delivers an ideal mix of modulation and braking performance Tooth Count 34 Round or Oval Round Drivetrain Speeds 12 Drivetrain Speeds 11 Drivetrain Speeds 10 Direct Mount Type Direct Mount SRAM Defined Color Black Ring Position Type Single Ring Position Type Chain Retaining Single Ring Offset 6 Chainring BCD Sram Direct Mount Color Black Material Aluminum Material Aluminum Chainline Hub Compatibility 135 142 MTB Hubs Chainline Hub Compatibility 150 157 DH Hubs Chainline Hub Compatibility 170 177 Hubs SWAT™ compatible design allows for storage and tool integration top{margin bottom:30px