Diablo Demo Demon? Carbide Reciprocating Blades are the most innovative blades on the market, delivering break-through 20x performance than standard blades. The unique feature combination of carbide teeth, friction-reducing coating and high performance tooth design, provides users with never-seen-before performance and ease of use. The Next Generation Diablo Demo Demon Carbide-tipped reciprocating blades with new Variable Tooth Design are specifically designed for maximum performance in nail-embedded wood. This high performance carbide-tipped blade delivers unmatched 20 times longer cutting life than bi-metal blades in nail-embedded wood.