Hex key set Proline 48388 — 8-piece hex wrench set

Proline 48388 — 8-piece hex wrench set is a compact toolkit of Torx and hex-shaped keys designed for loosening and tightening hexagonal socket fasteners in a variety of mechanical and assembly applications. The set includes eight sizes that cover common fastener types used in bicycles, furniture, appliances and general workshop maintenance. Each key is made of steel with high resistance to abrasion and twisting, and features a metal ferrule covered with soft plastic for improved grip and handling during repetitive tasks.

Advantages

The set combines durable steel construction with corrosion and wear resistance suitable for routine repair work. The soft plastic-covered ferrules provide a comfortable, non-slip contact point for manual operation and help protect the tool and user when applying torque. The compact, 8-piece assortment simplifies storage and transport, making it easy to keep the right size on hand for common maintenance and assembly jobs.

Suitable for

• Home repairs and do-it-yourself assembly
• Bicycle maintenance and adjustment
• Furniture assembly and tightening of fasteners
• Small appliance and electronics maintenance
• Workshop and professional light-duty mechanical work

Key specifications

• Material: steel with high resistance to abrasion and twisting
• Ferrule: metal ferrule covered with soft plastic for improved grip
• Number of pieces: 8
• Included sizes: T9, T10, T15, T20, T25, T27, T30, T40
• Form factor: compact handheld keys suitable for storage in a toolbox or pouch

How to use

Select the hex key size that matches the fastener head and insert the short or long arm into the socket depending on access and torque needs. Apply steady, controlled force to turn the key clockwise to tighten or counterclockwise to loosen. Use the longer arm for increased leverage on stubborn fasteners and the shorter arm for confined spaces. After use, wipe the tools clean of debris and store them together to prevent loss of individual keys.

Usage recommendations

Use the appropriate size to avoid rounding fastener heads; avoid excessive force beyond the tool’s capacity. Keep the plastic-covered ferrule dry and free of oils for best grip. For prolonged work, inspect keys regularly for wear or twisting and replace if deformation is detected.