Capri Tools 1/2" Drive Torque-Limiting Extension Bar — 100 ft·lb, 8 in Chrome Moly, Impact-Safe

The Capri Tools 1/2 in. Drive Torque Limiting Extension Bar is an 8-inch Chrome Moly extension that stops at 100 ft·lbs to prevent over‑tightening when used with impact wrenches.

When you need repeatable torque without switching to a manual torque wrench, this torque-limiting extension bar gives consistent results from an impact gun. Built from heat-treated Chrome Molybdenum steel, it slips or clicks once the preset 100 ft·lb (135 Nm) limit is reached so fasteners aren’t subject to excess load. A colored identification ring speeds workflow in busy shops where several torque limits or sizes are used.

How does this extension bar control torque when using an impact wrench?

The internal torque-limiting mechanism decouples the drive once the applied torque reaches the 100 ft·lb threshold, preventing further tightening. This allows impact tools to be used for controlled fastening without relying on feel alone.

• Torque cutoff set at 100 ft·lb (135 Nm) for predictable results
• Mechanism disengages under excess load to protect fasteners
• Works inline with most 1/2" drive impact wrenches and sockets

What materials and dimensions should I expect?

Manufactured from premium Chrome Molybdenum steel, the bar is built for heavy-duty workshop use and resists impact wear. The overall length is 8 inches, compatible with standard sockets and offers useful reach for recessed fasteners.

• Material: heat-treated Chrome Molybdenum (Cr-Mo) for strength
• Drive size: 1/2 in. to mate with common impact sockets
• Length: 8 in. providing clearance in tight or recessed areas

Will this protect my bolts and equipment during repetitive work?

Yes—by limiting torque to a fixed value, the extension reduces the risk of stretching threads, stripping heads, or stressing components during repetitive fastening cycles. It helps maintain consistent clamp load across multiple assemblies.

• Prevents over-torquing that can damage threads or fasteners
• Improves repeatability across many fasteners in production or repair
• Color-coded ring enables quick identification among tool sets

How do I use and maintain the torque-limiting extension bar?

Attach it between your 1/2" impact wrench and socket as you would any extension. After use, wipe clean, inspect the color ring and drive surfaces, and store dry. Occasional light lubrication of the detent area preserves smooth operation.

• Use inline with impact wrench and proper sockets for best results
• Inspect for wear and clean debris after jobs to maintain accuracy
• Store in a dry toolbox; keep color ring visible for fast selection

Who is this for? Mechanics, fleet technicians, assembly line workers, and serious DIYers who use impact wrenches but need consistent torque without switching tools will benefit most. If you often work with fasteners that require a controlled clamp force—wheel nuts, suspension hardware, or repetitive assembly tasks—this Capri Tools torque-limiting extension bar offers a durable, easy-to-integrate solution to reduce fastener damage and improve consistency in the workshop.