Crankbrothers Multi-tool M17 Midnight Black Edition

Crankbrothers M17 is a compact bicycle multi-tool with enough functions to handle most adjustments and simple repairs out on the road or trail. With 17 functions, it includes hex keys, a Torx T25, screwdrivers, spoke wrenches, and a chain tool in a format that easily fits in a saddlebag or your pack.

The chain tool is compatible with 8-, 9-, 10-, 11-, and 12-speed chains, making the M17 useful for everything from older bikes to modern gravel and mountain bike drivetrains. Hex keys from 2 to 8 mm cover many of the most common bolts on a bicycle, while four spoke wrenches and fixed 8 and 10 mm wrenches provide additional options when something needs adjusting along the way.

The tools are made from high-strength steel, and the side panels provide a better grip when you need to apply some force. Measuring 89 × 43 × 19 mm and weighing 168 grams, the M17 is small enough to always bring along, yet significantly more useful than the smallest multi-tools when something actually breaks.

This is a great multi-tool for commuting, gravel, touring, bikepacking, and MTB—especially if you want to carry a proper chain tool and a broad selection of tools without bringing an entire toolbox.

Quick Specs

• Product type: Bicycle multi-tool
• Number of functions: 17
• Material: High-strength 6150 steel with 6061 aluminum parts
• Hex keys: 2 / 2.5 / 3 / 4 / 5 / 6 / 8 mm
• Torx: T25
• Screwdrivers: Phillips #2 and Flat #2
• Chain tool: For 8-, 9-, 10-, 11-, and 12-speed chains
• Spoke wrenches: #0 / #1 / #2 / #3
• Fixed wrenches: 8 and 10 mm
• Dimensions: 89 × 43 × 19 mm
• Weight: 168 g
• Finish: Midnight Black