Can you guys include all the sizes and specs? That's the only thing holding I'm sure millions of bike users from purchasing any product.

just look at the Topeak website, it has all the detailed specs you will need, and it's very easy to find:Tools26 total Allen Wrenches2-L/2.5/3/4/5/6/8/10mm Torx® WrenchT25 Box Wrenches8/9/10mm 2 each Spoke Wrenches15g/14g Chain ToolCast Cromoly Steel Chain HookStainless Steel Wire Tire LeversTwo Integrated In Body Screw Drivers#2 Phillips & Flat Head KnifeStainless Steel Bottle OpenerHardened Steel CompartmentsFor Two Chain Pins Pedal WrenchMini (For Field Repairs) Tool MaterialHardened Steel BodyEngineering Grade Plastic Bag MaterialHD Nylon Size (L x W x H)8.6 x 4.3 x 4.1 cm 3.4" x 1.7" x 1.6" Weight290 g / 10.21 oz Art.no.TT2353

Do the tools have some resistance when opening them? As in do the other tools stay put when using?

Yes there is some resistance to keep the allen wrenches in place. The knife, screw driver and box wrenches lock in place when fully extended. I highly recommend this excellent tool.

does this work on schwinn bikes

All bikes being equal I believe that this tool will work on all bikes. I have an older Trek bike and it works perfectly.

Is this toolkit useful for bike assembly?

I will only use this tool for emergency(road side) repairs or minor things like tighten a few screws. Here's my reasons: 1) I have an old expensive racing road bike and is difficult to find parts and I m afraid some of the tool might stripe the components 2) the handle on the tool is not very long so it's difficult to apply even pressures when turning and it might slip and accidentally stripe the parts I m working on. I wouldn't use this to assemble a bike but I carry this tool every time I ride since it contains almost everything I needed. Also, it's very well built.

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Description

🔧 Gear up like a pro—because your ride deserves the ultimate multi-tool!

ALL IN ONE POWERHOUSE - 31 essential bike tools folded into a compact, portable design—never get caught unprepared again.
COMPACT LIGHTWEIGHT - At just 0.75 pounds and pocket-sized, it’s the ultimate tool for on-the-go maintenance without the bulk.
DURABILITY MEETS PRECISION - Crafted from premium aluminum and rigorously tested for long-lasting reliability on every ride.
PRO GRADE CHAIN COMPATIBILITY - Handles single and multispeed chains up to 12-speed, perfect for serious cyclists pushing limits.
TRUSTED BY PROS ENTHUSIASTS - Award-winning and widely used by riders at all levels—join the elite who demand the best.

The Topeak Alien II Multi Tool is a compact, award-winning cycling essential featuring 31 functions in a lightweight aluminum body. Compatible with up to 12-speed chains (excluding Campagnolo 11-speed hollow pin), it’s designed for durability and precision, trusted by both professional and amateur cyclists for reliable on-the-road repairs.

Specifications

Color	One Color
Size	L x W X H 8.6 x 4.3 x 4.1 cm / ?3.4? x 1.7? x 1.6?
Style	自転車用メンテナンスキット
League	Topeak
Team	Topeak
Drive System	Center Drive
Packed Size	L86×W43×H41mm
Height	3 inches
Length	8 inches
Weight	0.75 Pounds
Width	5 inches
Material Type	Other
Number of Items	1
Number of Pieces	2
Outer Material	aluminum
Power Source	hand_powered
Sport	Cycling
Included Components	Multi tool
Batteries Included?	No
Brand	Topeak
Department	unisex-adult
Manufacturer	FLEXCUT
Item model number	60102353
Product Dimensions	8.6 x 4.3 x 4.1 cm; 267.62 g
ASIN	B000FIE4AE

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