Socket 1/2" 21 mm GEKO T00143-21 — 12-point hand socket, pack sizes 10/100

GEKO T00143-21 is a 1/2" drive, 21 mm 12-point hand socket designed for manual and ratchet-based fastening and maintenance work. Manufactured for general workshop and field use, this socket fits 12-point nuts and bolts and is offered in pack quantities of 10 or 100 to suit professional and bulk-purchase needs. The 1/2" drive size provides compatibility with a wide range of ratchets and extensions commonly used in automotive and machinery maintenance.

Advantages

The 12-point geometry allows engagement with fasteners in tighter spaces and enables easier alignment on bolt heads compared with some 6-point sockets. Constructed for hand tool use, the socket is suited to repeated engagement and removal of 21 mm fasteners and works with standard 1/2" drive ratchets and handles. Pack size options simplify inventory management for workshops and service fleets.

Suitable for

• Automotive repair and wheel, brake or suspension fastener work
• General machinery maintenance and assembly tasks
• Workshop stock for service centres and repair shops
• Bulk purchase for fleets and industrial maintenance teams

Key specifications

• Drive size: 1/2 inch
• Point configuration: 12-point
• Intended use: hand and ratchet operation
• Pack quantities: available in packs of 10 or 100

How to use

Select a compatible 1/2" drive ratchet or handle and attach the 21 mm socket until it locks onto the drive. Place the socket squarely onto the 12-point fastener, ensuring full engagement before applying torque. Use steady, controlled force when tightening or loosening to avoid rounding the fastener. For extended reach or confined spaces, pair the socket with extensions or universal joints compatible with a 1/2" drive.

Usage recommendations

Choose the 12-point socket when working in restricted-access areas or when quicker alignment on fasteners is beneficial. Inspect the socket and fastener for wear before use and avoid applying impact tools unless the socket is specifically rated for impact; using this hand socket with hand tools will provide the most reliable and safe results.