MANNIFEN 2-Jaw Gear Puller 12-inch — Reversible Jaws, Forged Chrome Vanadium Steel

The MANNIFEN 2-Jaw Gear Puller is a heavy-duty, reversible 12-inch bearing and pulley puller built from forged chrome vanadium steel for controlled, damage-free removal of gears, pulleys, flywheels and bearings.

This two-jaw puller combines strength and adaptability: heat-treated chrome vanadium construction for toughness, a reversible jaw design for internal or external pulls, and an adjustable spindle with a hexagonal head and flange for safer, more accurate operation. Although styled as a 12-inch puller, the jaw opening reaches up to 9.84 inches because of built-in anti-drop safety pins; the tool is intended for common automotive, motorcycle and machinery removal tasks where controlled extraction matters.

How does the reversible jaw design adapt to different pulling jobs?

The jaws flip to face either inward or outward so you can switch between internal and external pulling without needing separate tools. Teeth and hook shapes are positioned to grip shafts, hubs, bearings and pulleys securely while the arm spacing and jaw depth are adjustable to suit varying part geometries.

• Flip jaws for internal or external pulls.
• Adjustable clamping depth for different hub profiles.
• Hooks designed to engage flanges and spool edges.
• Anti-drop pins lock jaw position for safety.

What makes this puller durable and safe under load?

Forged chrome vanadium steel and a heat-treatment process give the puller high hardness and improved fatigue resistance for repeated workshop use. Safety features such as the hexagonal spindle head with flange, anti-slip design and stabilizing beam button reduce slippage and sudden releases when applying torque.

• Forged chrome vanadium construction for strength.
• Heat-treated components for wear resistance.
• Hex head spindle with flange prevents wrench slip.
• Button on beam improves jaw stability and safety.

What size parts will this 12-inch puller actually handle?

While marketed as a 12-inch puller, the usable jaw opening is up to 9.84 inches due to the anti-drop pins that secure the hooks. The adjustable clamping width and depth accommodate most small-to-medium automotive and machinery gears, bearings and pulleys; always confirm part measurements against the maximum opening before use.

• Nominal size: 12-inch frame, usable jaw span: 9.84 inches.
• Suits a wide range of automotive pulleys, flywheels and bearings.
• Adjusts to different grip widths for versatile fit.
• Not intended for oversized industrial shafts beyond opening limit.

How do I get a clean, damage-free removal with this tool?

The puller delivers steady, centered force through its spindle and reversible jaws so parts come off evenly rather than being pried or hammered. Using a wrench on the hexagonal spindle head while keeping the jaws seated under a flange or edge minimizes marring and prevents bending or chipping of parts.

• Center spindle applies controlled axial force.
• Jaws grip under flanges to avoid part damage.
• Anti-slip spindle flange keeps wrench contact secure.
• Use gradual, even turns for best results.

Who is this for: The MANNIFEN 2-Jaw Gear Puller is aimed at DIY mechanics, small repair shops and maintenance technicians who need a robust, general-purpose puller for car and motorcycle maintenance, small machinery repairs and bicycle or equipment servicing. It’s best when you require a versatile tool that balances strength, safety features and straightforward adjustability rather than an oversized industrial extractor.