Lisle 3/4" Extra-Deep Truck Brake Cage Bolt Socket — 5" Length, Impact-Rated

The Lisle 49000 is a heavy-duty extra-deep 3/4" socket designed to quickly unlock truck air brake cage bolts and remove air brake boosters.

When working on commercial truck air brakes, access and reach are often the limiting factors. The Lisle 49000 socket is built to get deep into the brake cage area to engage stubborn 3/4" cage bolts and back out air brake boosters without bending extension bars or struggling with inadequate length. Made for mechanics who need a reliable, impact-capable tool, this socket fits both hand ratchets and impact wrenches and pairs with common drive adapters.

How does this socket reach cage bolts that other sockets can't?

The Lisle 49000 features an extra-deep profile that provides the extra internal length needed to slip over long bolts and studs found in truck air brake assemblies. Its 5" overall length with a 4-1/2" inside depth lets it clear flanges and shields while fully engaging the fastener head.

• 5" overall length for extended reach
• 4-1/2" inside depth to clear long studs and boosters
• Extra-deep design prevents slipping off recessed nuts

Can I use this socket with my impact wrench or just hand tools?

Yes — the Lisle 49000 is compatible with impact applications as well as hand ratchets. It accepts a standard 1/2" drive input or can be driven by a 7/8" hex adapter, giving you flexibility to use either air or electric impact tools when higher torque is needed.

• Works with 1/2" drive tools and adapters
• Designed to tolerate impact wrench use for stubborn bolts
• Also suitable for use with breaker bars and ratchets

What truck brake jobs does this socket handle?

This socket is purpose-built for tasks around truck air brakes: loosening cage bolts to unlock the assembly and removing air brake boosters for service or replacement. Its size and depth make it a go-to tool for preventive maintenance and on-the-road repairs where access is limited.

• Loosens cage bolts to unlock air brake chambers
• Removes air brake boosters for replacement or inspection
• Useful for fleet maintenance and mobile repair work

What are the size and compatibility details I should know?

The Lisle 49000 is a 3/4" socket engineered for heavy truck fasteners. It installs on a 1/2" square drive or accepts a 7/8" hex adapter. The simple, robust specification means it drops into most professional toolboxes without special adapters beyond common drive pieces.

• Socket size: 3/4" external engagement
• Drive options: 1/2" square drive or 7/8" hex input
• Length: 5" overall, 4-1/2" internal depth

Who is this for? The Lisle 49000 is aimed at heavy-duty vehicle technicians, fleet maintenance personnel, and DIYers who repair medium- and heavy-duty trucks. If you regularly service air brake chambers, need a dependable deep socket that can withstand impact use, or require a reliable tool for roadside brake work, this socket reduces struggle and speeds up removal of cage bolts and brake boosters.