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Choose bolt cutters for the material you are allowed to cut

By the Plain Prepper editors. Updated 2026-10-17.

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Quick answer

Choose Klein 63318 for an 18 inch steel handle cutter within its material limits, RIDGID S24 14223 for a 24 inch option, or RIDGID S30 14228 for its documented 31 inch overall length and higher listed capacities. Measure the material and identify its hardness before choosing. Use these only on property you own or are authorized to service. None is an electrical cable cutter.

Match both the material diameter and its hardness

A bolt cutter capacity is not one universal diameter. The RIDGID table separates soft metal at 15 RC, medium at 31 RC and hard at 42 RC. Klein defines its soft and medium category up to Rockwell C31 and hard category up to C42. A diameter that fits between the jaws may still exceed the appropriate material rating.

Identify what you are cutting before ordering. Record the diameter and the material specification from the item or its supplier. If the hardness is unknown, the larger soft metal figure is not a safe fallback. Ask the supplier which tool and capacity category fit the material, rather than guessing from appearance.

Compare the named cutters

Model	Length	Hard limit
63318	18 in	1/4 in
S24	24 in	5/16 in
S30	31 in	3/8 in

The hard material limits in this table apply only within the maker hardness categories described above. They are not guarantees for every bolt, chain or hardened part of that diameter. Read the label and complete maker table for the actual tool.

The S30 has higher listed capacities than S24, but it also has a different overall length. Choose by the work and available space. A bigger tool does not resolve an unknown hardness or make a prohibited application appropriate.

Check whether the handles can open at the work

Before choosing between these lengths, look at the position of the material and the space around it. Picture the full handle movement, not just where the cutting head would fit. If you cannot place and operate the cutter as the maker directs, choose a different authorized method for the job.

Klein 63318 is the shortest listed tool in this comparison. That can be a reason to consider it when its capacities match the job; it does not establish that it needs less hand force than the other cutters. No measured force comparison was verified.

For a tool kept with emergency supplies, make the intended task explicit. A label saying bolt cutters does not settle whether the tool suits a particular material or location. An emergency kit should not depend on cutting an unknown hardened component.

Follow the safety limits before attempting a cut

RIDGID warns that cut metal can fly and requires safety glasses. Its instructions also say not to exceed either the size or hardness capacity, not to twist or pry with the jaws, and not to add pipe extensions to the handles. These are reasons to stop and reassess a difficult cut, not challenges to overcome with more force.

Both brands warn against electrical applications. Klein states that these handles are not insulated and do not protect against shock. RIDGID says not to cut electrical wire or cable. Do not substitute any of these tools for an appropriate electrical cable cutter or a professionally controlled electrical task.

Use the full current instructions supplied with the selected tool. This buying guide deliberately does not reproduce an operating procedure. Only cut material you have permission to remove, and account for other people in the work area.

Distinguish the full cutter from a replacement head

RIDGID lists different replacement head assemblies for S24 and S30, and its parts sheet identifies each model separately. Klein lists 63818 as the replacement head for 63318. A head that resembles your existing tool is not enough to establish compatibility.

Check whether the listing is for the complete cutter or a service component. Match both the catalogue number and the model. Avoid transferring a replacement part number into a search for the complete tool, particularly when a listing photograph shows only the head.

Full warranty terms were not verified here. Confirm the current maker terms and seller eligibility before ordering. A brief warranty line in a marketplace listing does not describe exclusions or establish coverage for a particular use.

Choose the tool for a defined maintenance job

For the Klein, choose 63318 when its published capacities and 18 inch length fit the task. Compare S24 when you need its listed capacities and can accommodate the 24 inch tool. Move to S30 only when its material limits and 31 inch overall length suit the work.

Keep other jobs separate. Our multitool guide covers a different type of hand tool, while the work knife guide concerns ordinary cutting tasks. Neither replaces a material rated bolt cutter.

Check the exact condition and package before buying. The selected examples were found as new offers, but the product search can also return replacement heads and other lengths. Read the complete model code on the current result.

What to look for when you buy

Questions people ask

Can these cut any metal that fits in the jaws?

No. The maker limits depend on diameter and hardness, not jaw opening alone.

Is S30 exactly 30 inches long?

RIDGID lists S30 14228 at 31 inches overall. Use the specification rather than interpreting the model name as a dimension.

Are fiberglass or plastic grips electrical insulation?

Do not assume so. These selected tools are not recommended for electrical cable, and Klein explicitly warns its handles do not protect against electrical shock.

Can I add a pipe over the handles?

No. RIDGID explicitly prohibits cheater extensions.

Which should I choose if hardness is unknown?

Identify the material or get advice from its supplier first. Do not apply the soft metal capacity to an unidentified hardened part.

Sources

• 63318 product capacities and warnings (kleintools.com), Klein Tools
• Bolt and Strand Cutters sell sheet, named 63318 (data.kleintools.com), Klein Tools
• S24 and S30 ordering table (ridgid.com), RIDGID
• S14 to S42 named model parts sheet (cdn2.ridgid.com), RIDGID
• Proper Use of Bolt Cutters (cdn2.ridgid.com), RIDGID

Sources checked 2026-10-17.