The Dart 300mm 1/4" Right Angle Flexible Screwdriver Bit Attachment Holder (ADFLEX01) is a high-quality metal drill bit designed for screwdriving and drilling tasks. With a length of 300mm and a 1/4" diameter, this flexible screwdriver bit is suitable for use with air drills and standard drills. It is a versatile tool that can help you tackle various DIY and professional projects with ease. The brand, Dart Tools, ensures reliability and durability in this essential attachment for any toolkit.