i want to raise my flat bars on my mtn bike. 1-1/8" quill. easy to find quill extenders. i also have internal brake cable routing on the stem so using the extender allows me to easily lengthen the cable and retain original brakes. don't want to swap out a sidepull brake caliper. and don't feel like getting high rise bars which forces me to swap thumb shifters/grips to new bar. i have seen quills for $10 online. local shops don't seem to have any extenders in stock. paved trails only. no jumping or heavy pounding for me so extender should work fine.