Apex® brand bits, Slotted, 1/4'' hex power drive shank, blade .187 x .034, overall length 10''. Slotted bits from Apex® Fastener Tools can be used for driving screws and fasteners with power tools, hand tools and pneumatic tools. Apex® offers a wide selection of slotted bits, which are popular throughout the aviation industry as well as automotive, heavy industry or anywhere quality tooling products are required. The Apex® tool brand, formally known as Cooper Tools, is known worldwide for its' quality construction and durability in demanding conditions.