Dremel US40-03 1 Attachment, 4 Cutting Wheels Ultra-Saw Tool Kit features a powerful 7.5AMP motor for tough applications and faster cutting and the 3-in-1 for expanded versatility goes beyond just cutting with the added benefit of surface preparation. Dremel US40-03 1 Attachment, 4 Cutting Wheels Ultra-Saw Tool Kit features an added durability with long lasting drive train, metal feet and guards to take on more difficulty while resisting heat and an adjustable depth guide with plunge action creates greater precision and longer cuts.