Ratchets & Wrenches

Wera 6004 Joker 4 Set Self-Setting Spanners

Availability set by the retailer

The Wera 6004 Joker 4 Set is a compact folding pouch containing four adjustable, self-setting Joker spanners that together cover all common metric and imperial dimensions from 7 to 19 mm or 1/4" to 3/4". Each spanner automatically and continuously grips the hexagon screw or bolt the moment it's applied - a spring-loaded lever mechanism clamps onto the fastener to prevent slippage and protect against further damage to worn or rounded bolt heads. Built-in mechanical ratchet function allows fast, consistent screwdriving and loosening without ever removing the wrench from the fastener, and a return angle of only 30 degrees - made possible by the corner-width rectangular prisms in the mouth - makes light work of tight, confined spaces where a full wrench swing isn't possible. The included folding pouch keeps all four sizes organized, protected, and ready to grab for the job at hand.

Best Used For

MaintenanceAutomotiveRepairMechanicalHVACPlumbing

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Choosing Ratchets & Wrenches

How do I pick the right ratchet drive size?

Choose the drive size by the fastener size and torque you need — 1/4-inch for small fasteners and tight spaces, 3/8-inch for general automotive and mechanical work, and 1/2-inch for high-torque lug nuts and large bolts. A higher tooth count means a smaller swing arc, which is useful in confined areas.

When do I need a flex-head or swivel ratchet?

When fasteners sit at an angle or in recessed areas where a fixed-head ratchet cannot align. A flex or swivel head lets you keep the handle clear of obstructions while the socket stays on the fastener, improving access in tight engine bays and assemblies.