Sealey Premier Imperial Lock-On™ Extra-Long Ball-End Hex Key Set 9pc Features: Manufactured from Chrome Molybdenum steel with a polished satin finish. Removes rusted, damaged and severely rounded hex head fasteners with ease. Patented twist design on short-arm grips tighter as they turn preventing fasteners from rounding. Keys range in length from 88mm to 225mm and in size from 1/16" to 3/8". 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. Technical Details: • Manufactured from Chrome Molybdenum steel with a polished satin 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 1/16" to 3/8". • Ball-end allows key to drive fixing at up to 25°. • Contents: 1/16", 5/64", 3/32", 1/8", 5/32", 3/16", 1/4", 5/16",