Screwdriver bit holder GRAPHITE 56H557, 1 pc, 68 g

The GRAPHITE adapter converts a 1/2" square drive to a 1/4" hex connection and is made of durable chromium-vanadium (CrV) steel. With a 50 mm length and compact 68 g weight, it is intended for use with impact spanners and screwdrivers and includes a mounting hole for convenient storage or attachment.

Advantages

The adapter provides quick and secure switching between 1/2" square drives and 1/4" HEX bits, featuring a knurled non-slip ring for fast manual bit changes and a hole for hanging or securing the adapter. Its CrV steel construction offers durability and resistance to wear during heavy-duty fastening tasks.

Suitable for

• Use with impact spanners and impact screwdrivers
• Holding and quickly changing 1/4" HEX bits and short hex shank accessories
• Automotive, construction and general mechanical fastening tasks
• DIY repairs and assembly work requiring a compact adapter

When it may not be suitable

This adapter is not intended as a precision alignment tool; for delicate electronics or fine instrumentation work a smaller, dedicated holder is preferable. It is designed for impact use, but extremely high-torque applications beyond standard impact tools may exceed its limits.

Key specifications

• Material: chromium-vanadium steel (CrV)
• Interface conversion: 1/2" square drive to 1/4" hex
• Length: 50 mm
• Recommended use: impact spanners and screwdrivers
• Weight (approx.): 68 g
• Feature: knurled non-slip ring and mounting hole

How to use

Insert the 1/2" square end into the socket of the impact spanner or ratchet and then insert a 1/4" HEX bit into the hex end until it seats securely. Use the knurled ring to grip and release the bit manually when changing bits. Use the mounting hole to hang the adapter on a tool board or to secure it with a lanyard when working at height.

What to consider before purchase

• Ensure compatibility of your tool’s 1/2" square drive with the adapter
• Verify that intended bits are 1/4" HEX standard shank
• Consider required torque levels—suitable for standard impact tool use but not for extreme, non-standard torque demands

Usage recommendations

For reliable performance, use the adapter with impact-rated bits and tools, inspect the CrV steel surfaces for wear periodically, and avoid side loads that could deform the hex shank. Store the adapter on a tool board or in a toolbox using the mounting hole to keep it accessible and protected.