Amazon.com: BESNIN Shifter and Brake Combo Bike Shifter&Brake 1 Pair 3x7 21Speed Mountain Bike shifters Shifter and Left/Right Brake Lever Set for Mountain Bike Folding Bike Universal (3x7 21speed) : Sports &
Shimano V Brake Gear Lever ST EF51 Set, Gear Lever Brake Lever with Brake Cable, EF51-7 / EF51-8 Mountain Bike Brake Lever Gear Lever Set Aluminium Alloy 3x7 / 3x8 Speed -Shifter
Amazon.com : SL-M315-7R Shift Lever, Band on, 7-Speed, Right Hand : Sports & Outdoors
Amazon.com : SHIMANO Shift Lever XT M8000 11sp I-spec B LH : Sports & Outdoors