<p>The INGCO AKSDS10451 is a step drill bit made of high-speed steel with a titanium coating, suitable for drilling in various materials. Size range: 10-45mm.</p>
<p>The INGCO AKSDS04221 is a high-speed steel step drill bit, featuring a titanium coating and a size range of 4-22mm, ideal for precise and efficient drilling in a variety of materials.</p>