Rear RAPIDFIRE PLUS Shifting Lever; Front RAPIDFIRE PLUS MONO Shifting Lever Lightweight, ergonomic, compact design Ergonomic design, quicker lever access, and light operation enhance rider comfort and concentration 2-WAY RELEASE for instant push/pull movements Shifter Mount: I-SPEC EV (14mm slide range and 60-degree rotation) Compatible Rear Derailleur Type: Shimano 12-speed Compatible Front Derailleur Type: Shimano 2x 12-speed Includes Polymer-coated inner cable Shifter Style: Trigger Drivetrain Speeds: 12 Multi-Release: Yes Rubber grip: Yes Weight: 78g. (front); 117g. (rear)