Hand Tool Sets & Wrenches

Start with the fasteners you actually service: metric for metric heads and SAE for inch heads, adding the other system only when your equipment requires it. Do not treat a close-looking size as automatically interchangeable. Wright Tool advises choosing the closest proper fit because excess play reduces torque transfer and can round corners; CCOHS likewise says to select the correct jaw size to avoid slippage.

No. Count the useful sizes, drive tools, extensions, and access pieces rather than every bit or adapter. A smaller set that matches your fasteners and leaves room to replace one piece can be the better long-term system. Fit and access matter: Wright Tool emphasizes close wrench fit, while GearWrench's own ratchet specifications show how head profile, swing arc, handle length, and flex positions change access independently of piece count.

They mainly affect how little handle movement is needed and whether the tool fits around an obstruction. For example, GearWrench specifies 120 engagement positions and a 3-degree swing arc for one 120XP ratchet, plus a low-profile locking flex head. Treat those as model-specific specifications, not proof that every high-tooth ratchet is stronger; compare access, backdrag, direction control, head dimensions, and published standards together.

Stop using a wrench with spread jaws, damaged box points, a bent handle, or wear that permits slippage. OSHA specifically prohibits using adjustable, pipe, end, and socket wrenches when sprung jaws slip. CCOHS also advises discarding damaged wrenches, checking adjustable-wrench knurls, jaws, and pins, and first applying light pressure to confirm that a ratchet pawl is engaged before loading it.

Sometimes, but verify support for the exact model before buying. Tekton sells a service kit for specified 90-tooth ratchets, provides disassembly and lubrication guidance, and cautions that too much grease can hurt performance. Its warranty page also states that replacement parts ship in the United States and Canada. This is useful evidence of renewability for those listed tools, not a promise that every brand or ratchet is rebuildable.

Do not assume so. Electrical work calls for tools whose insulation, voltage rating, and applicable test standard are explicit, along with the required training and work practices. As one concrete example, Wiha states that its listed slimBits are individually tested to IEC 60900 and intended for live parts up to 1,000 V AC; that claim applies to the identified insulated system, not to ordinary sockets, pliers, or chrome-finished wrenches.