How to Buy a Multi-Tool

Choosing a multi-tool means trading functions for weight

Consider the tools you use most, and where you want to store your multi-tool. If you want to keep it with you all the time -- or on a long hike -- be sure it's really light enough to be comfortable. When it comes to multi-tools, less is often more. Too many tools can make tools "clump" when you try to pull the one you want out of a handle, and of course each tool adds bulk and weight.

• Consider which tools you use most. Each multi-tool has its strong and weak points; the key to satisfaction is to pick one that excels in the one or two tools you use most often.

• Look for blades and tools that lock open. That's a plus for both ease of use and safety.

• How easy is it to access each tool? We found lots of complaints from owners about the difficulty of prying tools out of a multi-tool handle.

• Look for a one-handed opening. Some multi-tools let you open blades one-handed; others let you flip open the pliers one-handed.

• Power adds weight. If all you really want is a nice pair of scissors plus a screwdriver, don't opt for big pliers and a wood saw. A few tools you always have with you are more useful than a loaded multi-tool you end up leaving at home because it's too bulky and heavy.

• How can you carry it? Options include a carabiner (a metal loop with a spring or screw gate), lanyard or keychain ring, nylon cord, removable pocket clip and a sheath.

• Universal bit holders add flexibility. Be sure the bit holder accommodates the bits you need most; some users need Torx bits, for example.

• How strong must the pliers be? To add leverage, consider a multi-tool with compound-leverage pliers or vise-grip pliers.

• How easy is the multi-tool to change or repair? Some multi-tools make it easy for the user to adjust tension or replace tools, while other manufacturers make it difficult or void the warranty.

• Buy from an authorized retailer with a good return policy. We found quite a few complaints from owners about inconsistent quality in multi-tools -- sometimes about poor fit and finish, often about tools fastened so tightly that they're very hard to pull out of the handle. Exchange any multi-tool that doesn't work well, and when the return period is over, take advantage of the good warranties manufacturers offer -- but note that the warranty requires buying from an authorized dealer.

Here are the accessories available on multi-tools; you can make your own checklist, then search for the multi-tool that has what you want with as few extras as possible:

• Knife or knives: clip-point, serrated, with cutting hook, partially serrated
• Pliers: usually combination needlenose and regular pliers
• Pliers with vise-drip capability
• Pliers with compound leverage
• V-cutter
• Hook cutter on end of blade
• Crate opener
• Wire cutters
• Hardwire cutters
• Stranded wire cutters
• Wire stripper
• Wire crimper
• Awl
• Reamer
• Toothpick
• Saw (single-tooth or double-tooth wood saw, metal saw)
• Screwdrivers built into the tool -- various sizes and types -- including square-head
• Bit drivers -- large, small
• Socket wrench adapter
• Window breaker
• Disc saw
• Chisel
• Ruler
• Bottle/can opener
• Corkscrew
• File(s): nail file, metal/wood file, diamond-coated file, 3-sided file
• Scissors

There are also quite a few niche multi-tools -- for paint preparation, gardening, electrical work, etc. -- that build in specialized tools.

Optional multi-tool accessories often include a sheath, set of bits and an extension bit driver for getting into tight spaces.