Socket bit set Proxxon PR23100 — hex (Allen) H2–H14, 1/4" & 1/2" drive, 18 pcs, short and long

Proxxon PR23100 is an 18-piece hex (Allen) socket bit set that covers sizes H2 through H14 and provides both 1/4" and 1/2" drive compatibility. The set contains a mix of short and long bits to reach fasteners in tight or deep locations, enabling work on a wide range of mechanical assembly, maintenance and repair tasks. The design supports quick interchange between the two drive sizes, making the set suitable for workshops and mobile tool kits.

Advantages

The set combines short and long hex bits in common metric sizes, reducing the need to carry separate tools for shallow and recessed fasteners. Inclusion of both 1/4" and 1/2" drive options allows use with compact ratchets and larger torque tools. Hardened steel construction and precision-machined hex profiles ensure reliable fit with minimal rounding of screw heads. The organized set simplifies selection and storage.

Suitable for

• Mechanical assembly and disassembly of machinery and equipment
• Automotive maintenance and repair tasks requiring metric hex keys
• Electrical and electronic enclosures with recessed hex fasteners
• Workshop use where both compact and high-torque drives are needed
• Mobile tool kits for service technicians and field engineers

Key specifications

• Number of pieces: 18
• Hex sizes included: H2, H2.5, H3, H4, H5, H6, H7, H8, H10, H12, H14 (short and long variants where applicable)
• Drive types: 1/4" and 1/2" compatible sockets
• Bit types: Metric hex (Allen) socket bits
• Construction: Hardened and precision-machined steel

How to use

Select the correct hex bit size that matches the fastener head and attach it to the appropriate drive adapter or ratchet (1/4" for compact access, 1/2" for higher torque). Use short bits for limited-clearance situations and long bits for recessed or hard-to-reach fasteners. Apply steady, aligned torque to avoid cam-out and ensure full engagement of the hex profile in the fastener. After use, return bits to their designated slots in the storage case to maintain organization and protect the bit tips.

Usage recommendations

Use the 1/4" drive configuration for precision work and confined spaces; switch to the 1/2" drive when additional torque is required. Inspect bit tips regularly for wear and replace damaged bits to prevent fastener rounding. Store the set in a dry environment to limit corrosion.