7339 Micro Precision Reversible Screwdriver Set 8-in-1 for Electronics Repair

• Specifications
• Tool Type: Multi-Bit Reversible Screwdriver
• Bit Configuration: 4× Double-ended reversible bits (8 total profiles)
• Included Profiles: Slotted (Flathead) and Phillips (common electronics sizes) 
• Mechanism: Quick-release locking collet
• Handle Material: High-impact plastic with ergonomic grip
• Shaft Length: Adjustable / Reversible
•  Recommended Use: Terminal blocks, project enclosures, basic robotics assembly, and general electronics repair
  
• Minimum hardware
• A project requiring assembly : you need actual screws, terminal blocks, or standoffs to drive.
• Your hands: no external power supply or microcontroller required to operate this mechanical tool!
• Safety Warnings
• Live Circuit Warning: This hand tool does NOT feature VDE-certified electrical insulation. ALWAYS disconnect mains power and power supplies before driving screws in terminal blocks or relay modules.
• Over-torque Warning: When assembling acrylic or 3D-printed plastic enclosures, do not overtighten the metal bits are stronger than your plastic parts and will cause cracking.
  
  
• Accessories Included in the Box
• 1× PENG FA Ergonomic Screwdriver Handle
• 4× Reversible Double-Ended Bits (providing 8 total profiles)

Frequently Asked Questions

• Is the PENG FA 7339 compatible with standard PC chassis screws?
  Yes, the medium Phillips bit is perfectly sized for standard #6-32 and M3 screws used in PC and robot chassis assembly.
• Can I use this screwdriver on laptop or smartphone screws?
  No, laptops and smartphones typically require precision bits (like PH000 or Pentalobe), which are much smaller than the standard electronics bits included in this 8-in-1 set.
• Does this set include Torx or Hex bits for specialized enclosures?
  This specific set primarily focuses on common Slotted (Flathead) and Phillips profiles; it does not include Torx or Hex bits.
• Will the slotted bits fit standard 5mm screw terminal blocks?
  Yes, the smaller slotted profile is specifically designed to fit securely into standard 3.5mm and 5mm terminal block screws.
• Is the PENG FA 7339 screwdriver VDE certified for high-voltage work?
  No, this tool does not feature VDE electrical insulation and should not be used on live high-voltage AC circuits.
• Can I use this tool to wire up a live 220V AC relay module?
  Absolutely not; you must completely disconnect all mains power before adjusting screws on any relay or terminal block.
• Is the handle material anti-static (ESD safe) for handling sensitive PCBs?
  While the plastic handle is non-conductive, it is not formally rated as ESD-safe, so avoid touching the metal shaft directly to sensitive microcontrollers.
• How do I change the bits on the PENG FA 7339 handle?
  Simply pull back on the quick-release locking collar at the tip of the handle, slide the double-ended bit out, flip or swap it, and push it back until it clicks.
• Are the reversible bits magnetic to hold screws?
  Yes, the tips are lightly magnetized to help lift small M2 and M3 screws out of deep enclosure wells.
• Can I use standard 1/4-inch hex bits from other brands in this handle?
  This handle uses a specific reversible double-ended bit mechanism, so standard single-ended 1/4-inch hex bits may not lock in securely.
• Where can I find a guide on the exact bit sizes included?
  The physical bits are etched with their profile sizes (e.g., PH1, PH2), which correspond to standard electronics fastener dimensions.
• What material are the screwdriver bits made of?
  The bits are forged from hardened tool steel to resist cam-out and prevent the tips from rounding off during heavy use.
• Does this tool require any maintenance or lubrication?
  The locking collet requires no lubrication, but keeping the bits clean and dry will prevent surface oxidation over time.
• Why is the screwdriver bit slipping out of the handle?
  You likely have not pushed the bit far enough into the handle; ensure it clicks past the internal locking ball bearing.
• Why is the screwdriver stripping the heads of my M3 screws?
  You are likely using a Phillips bit that is one size too small for the screw head; swap to a larger bit to ensure maximum surface contact.
• What should I do if the locking collar feels jammed?
  Gently tap the handle on a solid surface to dislodge any plastic debris or metal shavings that may have fallen into the collet during project building.
• Why is the magnetic pull on the bits feeling weak?
  Magnetism can fade over time with impact; you can instantly restore it by rubbing a strong neodymium magnet along the shaft of the bit.