Types of wrenches and their corresponding specifications:
- Internal hexagon wrench (internal hexagon) (GB5356-85), nominal size (opposite side size): 2.5-36.
- One letter screwdriver (QB/T 2564.4-2012), specifications (length without shank x diameter): 50 × 3~350 × 9.
- Cross shaped screwdriver (cross screwdriver) (QB/T 2564.4-2012), specifications (length of rod without shank x diameter of rod): 50 × 4~400 × 9.
- Adjustable wrench (GB/T 4440-2008), specifications (length x maximum opening width): 100 × 13~600 × 65.
- Double headed wrench (double headed solid wrench) (GB/T 4388-2008), specifications (matching of opposite side dimensions): 3.2 × 4~75 × 80.
- Plum wrench (GB/T 4388-2008), specifications (opposite width): 5.5-36.
- Socket wrench (with swivel) (GB3390.2-82), specifications (opposite width): 6.3-63.
Manual wrenches, also known as regular wrenches, are mainly divided into single headed wrenches, double headed wrenches, adjustable wrenches, ring wrenches, multi-purpose wrenches, impact wrenches, socket wrenches, socket drivers, torque wrenches, cross wrenches, ratchet wrenches, hook wrenches, and hexagonal wrenches.
Internal square wrench, manual clutch torque wrench, pipe wrench, T-shaped wrench, L-shaped wrench, three-way wrench, crescent wrench, oil bucket wrench, tire wrench, spark plug wrench, filter wrench, combination wrench, other wrenches, etc. Torque wrenches are divided into sound wrenches, pointer wrenches, and digital wrenches.
