• One of a comprehensive range of Premier Hand Tools, suitable for daily professional use. • Manufactured from heat treated and hardened Chrome Molybdenum steel with satin chrome finish. • Removes rusted, damaged and severely rounded hex head fasteners with ease. • Patented twist design on short-arm grips tighter as they turn. • Prevents fasteners from rounding. • Keys range in length from 88mm to 225mm and in size from 1.5mm to 10mm. • Ball-end allows key to drive fixing at up to 25°. • Supplied in easy-access case with hanging tag for safe storage and quick key selection. • Contents: 1.5, 2, 2.5, 3, 4, 5, 6, 8, 10mm. • Lifetime guarantee*.