Husky HSTC4790 6″ Pneumatic Dual-Action Sander for $24.88 after coupon code HDDAD5. Shipping is $5.99 for a total of $30.87 shipped, or free on orders over $45. If needed, use this Filler Tool to qualify for free shipping. Here is a screenshot for your reference. It features dual orbital and rotary motion, up to 0.5 HP power with up to 10,000 RPM, built-in power regulator, and a lever throttle for variable speed control.