【3 x 7 Speeds】 The bicycle shifters are marked with 3-speed or 7-speed. The left shifter is for 3 speeds and the right shifter is for 7 speeds. There are two shifters: one for downshifting and one for upshifting. The shifters come with cables. 【Combination Design】 The shifters and brakes are a single unit. This takes up less space on the handlebars and is very easy to install. Tip: It is easier to install the brakes if you leave the old brake cables in place. Simply unscrew the adjustment screw on the old brake lever to loosen the cable. Then insert the cable into the new brake lever. 【Specifications】 Shifter cable length: Front: 1800 mm, Rear: 2050 mm; Brake cable length: Front: 750 mm, Rear: 1700 mm. This bicycle shifter is suitable for a 22.2 mm diameter bicycle handlebar. 【Gear Window】 All shifters have an intuitive gear display to clearly and quickly show the gears. The shifter handle provides an ergonomically designed finger position for more comfortable use. It can be adjusted to your needs within reach. 【High-Quality Material】 The bicycle shifter lever is made of aluminum alloy, lightweight and integrated, easy to control and suitable for most bicycles. It works perfectly for optimal performance, maximum safety, and long service life.