Felo 0715732100 Smart Blade - T10 - T15 Blade, 6-1/2-Inch long Size: T10 - T15 Length: 6 1/4-inch Lifetime Warranty Black tip for precision and fit 1/4" blades made from high-quality bit-steel, exceeding industry standards by up to 100% Made on 1/4" stock and can be used as long bits in any power tool Precision quality and great versatility Lifetime warranty - we will replace it free of charge