This DEWALT Impact Ready(R) titanium drill bit set offers superior drilling performance in metal, wood and plastic to help you tackle a wide range of projects. The bits feature a one-piece solid core that is five times more durable than 2-piece drill bits. The patented web taper helps to increase bit strength for durable and lasting use. With their Pilot Point(R) tip that starts up on contact and reduces walking, the bits offers speedy performance in creating clear, burr-free holes accurately and with reduced lock-up on breakthrough. The 10-piece set contains two 1/8" drill bits, a 9/64" drill bit, a 5/32" drill bit, a 11/64" drill bit, a 3/16" drill bit, a 7/32" drill bit, a 1/4" drill bit, a 5/16" drill bit and a 3/8" drill bit.