Unior's Handbook from the Canadian author and expert mechanic Denise Belzil, is a detailed book showing how-to instructions with pictures and additional tips for both professional and home bicycle mechanics.

Denise has been working in bicycle mechanics for almost 30 years, becoming one of its pillars in North America. She established Montreal’s first bicycle mechanics school, Techno Cycle, during the 1990s, where she has taught countless mechanics during her career.

Volume I cover hubs, bottom brackets and headsets and comes on 274 pages. Volume II covers gear and brake systems on 318 pages.

The book is printed on a high-quality laminated paper with a spiral binding, so it's very handy to use during any bicycle service operation.