Zephyr 1/4” Torq-Set ® #6 Power Drive Bits, ACR Description<p class="lead-desc"Zephyr Torq-Set ACR Power Drive Bits are heat treated in small lots to guarantee consistent quality. Zephyr's unique Z-Forge process assures an exact dimensional fit in the recess. Zephyr Screwdriver Bits will give you the truest fit, longest performance and the least cam-out and product damage of any available screwdriver bit at any price. Zephyr Torq-Set ACR Power Drive Bits have served the aerospace and automotive industries with high quality, technically innovative tools produced in a manufacturing environment that features intense quality control and superior customer service.