HIGH QUALITY MATERIAL: This Thumb Gear Shifter is made of durable aluminum alloy material, it works perfectly for optimum performance and maximum safety and longevity. Ergonomic Design: Compatible with liner-pull, cantilever, roller, and mechanical disc brakes, Ergonomic design for more comfortable operation. Trigger Type Handle: Right shifter is a trigger-type 7 speed shifter, with one lever for down-shifts and a thumb button for up-shifts. Left shifter is a ratcheting thumb lever for triple cranksets. Optical Gear Display Indicator: All shifter come with wires, with noise-dampening bumper stopper, offering precise and consistent shifting performance. Designed with optical gear display indicator to show you the gear position. 3x7 SPEED: You can use only left gear shifter for 3 speed and only right shifter for 7 speed and both left and right shifter for 3x7 speed.

Exterior Finish: Aluminum. Product Dimensions: 4"L x 0.83"W. Style: Compatible. Color: 3x7 21 Speed. Brand: LITEONE. Date First Available: July 18, 2020. Best Sellers Rank: #23,569 in Sports & Outdoors. Customer Reviews: 4.3 out of 5 stars 436 ratings 4.3 out of 5 stars. : B08D77VQZ7. Batteries Required?: ?No. Finish: ?Powder Coated. Item model number: ?LITEONE Brake Levers Shifter. Item Weight: ?13.7 ounces. Part Number: ?LITEONE Brake Levers Shifter. Manufacturer: ?LITEONE. Unit Count: ?1 Count. Package Type: ?Standard Packaging. Handle Material: ?Aluminum. Metal Type: ?Aluminum. Finish Type: ?Powder Coated. Handle Type: ?Lever. Exterior Finish: ?Aluminum. Product Dimensions: ?4"L x 0.83"W. Style: ?Compatible. Color: ?3x7 21 Speed. Brand: ?LITEONE.