Belleville Disc Spring: 1.25" ID, 0.18" OAH, 2.5" OD MPN:MB2500-120

These auger bits feature an 1/2 inch size with a total length of 7.5 inches, making them suitable for drilling into various materials like wood, plastic or lightweight concrete walls or floors. They come equipped with high-strength solid steel blades coated with black oxide which offer increased durability and reduced slippage while drilling into hard surfaces. Their standard 6 spline shank allows for secure engagement to most auger drills on the market ensuring seamless operation. Auger bits are ideal tools for construction workers, woodworkers, carpenters or any individual seeking to install fasteners through thick walls with ease.