4mm, 5mm, and 6mm bolt heads are the most common sizes on your bike. 90% of water bottle boss bolts use an M5 bolt, which takes a 4mm hex key. Lots of stems, almost all chainring bolts, many seat posts and so on use a 5mm allen key. We sell these because everyone needs a few of these keys around. We have extras laying around the shop. You kinda always need one in reach whence working on your bike. However, the real place these keys come out to shine is roadside bike repair. We love a good multi tool, but for some hard to reach places, a loose hex key is the ticket to a quick and sweat free repair. Water bottle cages and most multitools hate each other. Weird fender bolts by the bottom bracket do too. Even lots of seat posts can not use a multi tool to be adjusted. Critical, when you need to make an adjustment though!
Bonhus makes all of their tools in the US, in the Midwest, so you’re guaranteed that your tool has a droll sense of humor and makes a mean old fashioned.
Our on-line store is open 24/7 and we ship Monday through Friday, excluding some holidays. Orders received for products without shipping restrictions on its product page will ship the same business day when received before 12:00 p.m. PST. Orders in high demand will have an estimated production time listed on its product page and will ship according to the date listed.
The best tools out there are beautiful, highly functional, durable and serviceable. Enlightened bikes are efficient, beautiful, comfortable and fun to work on. A bicycle brings you closer to experiences, they enrich a locality, they are spiritual partners on your journey through life. Analog Cycles builds enlightened bikes for life’s peregrinations.