Hex Key Set Dedra long 1.5–10 mm, 9-piece CR-V

Long hex key set Dedra 1.5–10 mm, 9-piece CR-V provides a compact selection of metric Allen keys with extended shafts for improved access to recessed or deep fasteners. The set covers nine common sizes from 1.5 mm up to 10 mm and is made from chrome-vanadium steel to ensure strength and resistance to wear during repeated tightening and loosening tasks. The long-arm design increases torque leverage and allows work in narrow or hard-to-reach spaces, making the set suitable for both domestic and workshop use.

Advantages

The chrome-vanadium construction offers hardness and durability under repeated torque, while the long-arm length improves reach and mechanical advantage compared with standard short keys. The included size range from 1.5 mm to 10 mm covers a wide variety of metric hex fasteners commonly found in furniture, bicycles, and machinery. The set is compact and easy to store, and each key’s hex profile provides a reliable fit to reduce rounding of screw heads.

Suitable for

• Assembly and disassembly of flat-pack and wooden furniture
• Maintenance and adjustments on bicycles and scooters
• Mechanical repairs and fastening tasks in automotive and light machinery
• General household repairs and DIY projects requiring metric hex keys

Key specifications

• Material: chrome-vanadium steel (CR-V)
• Quantity of pieces: 9
• Size range: 1.5 mm, 2 mm, 2.5 mm, 3 mm, 4 mm, 5 mm, 6 mm, 8 mm, 10 mm
• Design: long-arm hex keys for enhanced reach and leverage

How to use

Select the hex key with the matching size to the internal drive of the fastener. Insert the short or long end into the screw recess depending on required torque and reach; use the long arm for access to deep-set screws and the short arm for higher torque. Apply steady, even force when tightening or loosening to avoid rounding the fastener. After use, store the keys together to keep sizes organized and prevent loss.

Usage recommendations

For secure engagement, ensure the key fully seats in the screw recess before applying force. When higher torque is necessary, use the short end in the fastener and hold the long arm for leverage. Avoid using damaged or worn keys on high-torque applications to prevent fastener damage or tool failure.