Dissipate electrostatic discharge (ESD) for safety when sanding. These sanders have a copper ground wire to divert ESD away from users, sensitive equipment, and combustible materials. They’re often used for sanding across multiple materials—such as wood to fiberglass—as doing so can generate harmful static. Connect the copper wire to the ground of either a vacuum system or an outlet. These sanders also have two 1-megaohm resistors for protection in case there’s accidental contact with an electrical current.

Also known as random orbital sanders, these sanders move in small irregular circles. No single part of the abrasive follows the same path twice, resulting in a swirl-free finish. This leaves a more consistent finish than rotary or orbital disc sanders. To prevent clogs and remove debris from your environment, attach these sanders to a vacuum system. Designed for heavy duty applications, these sanders are powerful enough to quickly remove lots of material without getting bogged down. And they’re lightweight, so they’re easy to control and won’t tire you out after long periods of use. Use with hook and loop sanding discs.

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