3x blade retention. Easy blade change. 3 Blades in handle. To change blade. US & Canada only. Limited lifetime warranty guaranteed tough. Guaranteed Tough: If a product fads to perform due to defects in material or workmanship, we will replace it. Proof of purchase is required. Warranty is not transferable. See dewalt.com for details. dewalt.com. (1-800-4-Dewalt); (1-800-433-9258). Made in USA with global materials.