700, Road disc brake with shift/brake lever combo, Rear, 10sp

* Alloy brake and shift levers* 10 Speed DoubleTap with Zero-Loss shifting* 2-Piston open system * Piston Size: Fr 19mm, Rr 18mm * 2-Piece forged aluminum caliper w/ top loading pads * For 140 or 160mm rotors* Compatible with 10 speed derailleurs only* SRAM Model ID: SB-700-HRD-B1