Shimano 105 ST R7120 12 Speed Shifter Size:Left strongest and most secure smartphone Advance strongest and most secure smartphone bike mount on the market filling in all of the crevices of the metal with highly lubricious and wear resistant tungsten disulfide particles FeaturesMechanical 12 speed dual control lever with updated ergonomicsLight shifting operation lets you focus on the road aheadNew blade shape creates shorter lever access curve allowing riders with a wide range of hand sizes and shapes to comfortably reach their leversSpecifcicationsBrake lever Hose joint: StraightBrake lever Recommended brake caliper: BR R7170Brake lever Oil: SHIMANO Mineral New lever design brings better control to a wider variety of ridersThe SHIMANO 105 R7120 DUAL CONTROL LEVERS feature a revised lever position and bracket shape developed using data from a broad study of different hand shapes