SATA SC80308 4mm Extra Long Hex Key

Key specs: size 1.5 mm, extra-long design for enhanced access, chrome vanadium (Cr-V) steel for strength and durability, chamfered tips for fast insertion, easy-to-read size markings, and an ergonomic handle for comfortable control during extended use.

The longer reach allows you to access recessed or deep-set screws in automotive, electronics, bike maintenance, or furniture assembly where a standard-length key can’t reach. It also provides improved leverage for higher torque without bending or slipping.

Ideal for automotive repairs, bicycle maintenance, computer and electronics assembly, furniture assembly, and any project involving deep-set hex fasteners or tight spaces where a standard tool won’t fit.

Align the hex key with the screw, apply steady axial pressure, and rotate with controlled torque using the ergonomic handle. Make sure the tip fully seats in the screw head to avoid cam-out, and keep the tool straight to maximize leverage and reduce wear.

Made from chrome vanadium (Cr-V) steel for excellent strength and wear resistance. The chamfered tips aid insertion, and the scale markings ensure quick identification, while the ergonomic handle helps reduce fatigue during prolonged use.

Compared to standard-length hex keys, this model offers extended reach for hard-to-access screws, reducing the need for awkward angles. For variety, you can also explore: SATA Long Hex Key 2 mm for deeper access in slightly larger screws (https://fepy.com/product/sata-extra-long-hex-key-2mm) and SATA Standard Hex Key 1.5 mm for regular-length tasks (https://fepy.com/product/sata-standard-hex-key-1-5mm). If you need precision with a ball-end tip, consider SATA Precision Hex Key 1.5 mm (https://fepy.com/product/sata-precision-hex-key-1-5mm-ball-end).

Yes. Use the right size to prevent cam-out, apply steady torque rather than sudden force, wear eye protection if working overhead or with stubborn fasteners, and store the tool dry to prevent corrosion. Avoid bending or twisting with misaligned screws to reduce the risk of tool breakage.

Its extended reach, precise 1.5 mm fit, durable Cr-V construction, chamfered tips for faster insertion, legible size markings, and ergonomic handle combine to speed up work, reduce tool wear, and improve comfort over long tasks—making it a practical upgrade from standard-length keys.

When you’re accessing screws in tight or recessed spaces (engine bays, appliances, electronics enclosures, bike frames), or when you need added torque without contorting your hand. The extra length helps you reach screws that a regular key simply cannot access.

Keep it dry and clean after use to prevent rust, inspect the tip for wear before use, and avoid dropping or striking the edge against hard surfaces to prevent rounding or chipping. If it begins to show significant wear, replace to maintain a precise fit.