Wera’s new Diamond Coated Bits are designed to prevent the frustration caused by a stripped screw. The tips of the hardened bits are actually covered with diamond particles, so the driver bites into the screw head while turning it. The result is less pressure needed to drive screws, less camming out, and longer bit life. The bits also have a tempered portion on the shaft that acts as a shock absorber, making them ideal for impact drivers. Price: $4. 905-637-0003. weratools.com.