18-Speed Mountain Bike Twist Shifter Bicycle Gears Black 7/8" Diameter + Cables - Walmart.com
Amazon.com: MAKELEN Shimano Bike Shifter EF51, 7 Speed Right Brake Lever with Inner Cables, Ergonomic Handle for MTB Silver : Sports & Outdoors
Amazon.com: SOONHUA Bike Speed Shifter,TX-30 Right Thumb Gear Shifter,1 Pair Mountain Bicycle Gear Shifters 3X7 Speed Shift Lever and Set with Gear Indicator for Road Bike,MTB : Sports & Outdoors
SHIMANO ST-EF41 3/67/18/21Speed MTB Bicycle Bike Shifters Set Brake Shifter | eBay