RIDGID Like New - RIDGID 18V Brushless 4-1/2 in. Angle Grinder (Tool Only) RIDGID introduces the 18V Brushless Cordless 4-1/2-Inch Angle Grinder (Tool-Only). The Brushless 4-1/2-Inch Angle Grinder delivers unmatched performance in a cordless package. This grinder delivers an industry leading 10,000 RPM. RIDGID's brushless tools... $129.00 Was: $198.00 Was: Add to Cart