hexagonal, rod-shaped tool for turning allen screws

The most common tool Paintball players use to adjust screws on their markers. Such as adjusting velocity or taking off a grip frame.

a wrench for Allen screws

Type of wrench used to install or remove Allen screws. Also known as a hex wrench.

See hex wrench.

This six-sided rod, usually bent into an L-shape, is used to tighten and loosen screws with Allen-type heads. Usually sold in sets with an assortment of sizes, Allen wrenches come in both U.S. Standard and metric sizes. Home Improvement Encyclopedia

A hexagonal wrench used for socket screws. "Allen" is a brand name. An Allen wrench is also called a hex socket wrench.

An L-shaped tool that works like a screwdriver, designed to remove screws with hexagonal holes in their heads. They are sometimes called hex wrenches.

Size-specific "L"-shaped loosening and tightening tool. Also referred to as hex key.

Rod, with one part bent at a right angle to provide leverage, it has a hexagonal cross section designed to fit a hex socket or Allen screw.