Park Tool makes the blue tools in most bike shops, and the I-Beam is its folding multi-tool. The IB-3 is the largest of the three in the range.
What the listing publishes
3, 4, 5, 6 and 8 mm hex wrenches, a straight blade screwdriver, then 1.5, 2 and 2.5 mm hex and a T-25 Torx, then a composite-wrapped tire lever, two spoke wrenches and a 10-speed compatible chain tool. It weighs 6.4 oz.
What 10-speed means today
Many new bikes run 11 or 12 speed chains, which are narrower. This is the main reason the M19 scores higher here. If your bike has 10 or fewer cogs, the difference does not apply, and the built-in lever is a real plus.
What to check before you buy
Count your cogs. Then think about whether you would ever fix a chain on the road. For flats and loose bolts, this tool has everything you need.
What we rate and what we flag
Strengths
A built-in tire lever
A long-established bike tool brand
Fewer, more useful functions
Compromises
Chain tool rated to 10-speed only
Costs more than the Crankbrothers
A long, narrow shape in a small bag
Specifications
Functions
13
Hex
1.5, 2, 2.5, 3, 4, 5, 6, 8 mm
Torx
T-25
Screwdriver
Straight blade
Tire lever
Composite wrapped
Spoke wrenches
2
Chain tool
10-speed compatible
Weight
6.4 oz
The questions riders ask
Will it work on an 11 or 12 speed chain?
Park Tool lists a 10-speed compatible chain tool. For 11 and 12 speed, the Crankbrothers M19 on this shelf states that compatibility.
Does it include a Torx?
Yes, a T-25.
Our score
8.2/ 10
A good tool held back by its 10-speed chain tool.
Against the closest bike gear on price
Same category, nearby prices, between bike gear. What remains is the specifications every one publishes — half empty, a column is no use.
If price decides: Crankbrothers M19 Multi-Tool, at $35.
Who buys this one, among bike gear
Riders on 10-speed or older drivetrains who want a tire lever in the tool.
Sources
Specifications: the manufacturer sheet for bike gear and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.
A 15-piece 1/4 inch click torque wrench kit covering 2 to 26 Nm, with a 72-tooth head, a stated accuracy of ±4 percent clockwise and a calibration certificate.
Best for: Home mechanics with carbon parts or a road bike that sees regular work.