Review on microSHIFT 3X7 Speed Black Twist Grip Shift Gear Shifters - Shimano Bicycle Compatible by Chuck Derrick

All in all a great price item. Bought for a 16 year old bike, my main gears 1,2,3 wouldn't shift anymore, the cable was rusted in one of the brackets. Bought to replace them, my gears 1-7 all worked but the numbers were erased so I went ahead and changed those too. Installation only took about 5 minutes per gear selector. I found the installation very easy. I didn't need a youtube video to show me how to do it and it was my first experience on the bike aside from changing bike tubes. The reason for the 4 stars is that I couldn't set my bike in 7th gear, but 1-6 works great. I know the switch works in the 7th position, I'm hoping to set it a day after a break-in period. This is only a 3 day review but so far so good. I will come back and complain if it breaks. For reference, my bike is a Pacific Rubicon Vortex 21 speed. That's about 16 years plus or minus.