General description Selection of impact quality square drive converters, comprising both male to female and female to male, covering all drives from 1/4" D to 1" D. The set includes step-up and step-down adaptors for versatile use. Technical specifications Material: Chrome molybdenum Finish: Black phosphate Includes: 8 adaptors Compatibility and accessories Step-up adaptors: 1/4" D (F) to 3/8" D (M), 3/8" D (F) to 1/2" D (M), 1/2" D (F) to 3/4" D (M), 3/4" D (F) to 1" D (M) Step-down adaptors: 1" D (F) to 3/4" D (M), 3/4" D (F) to 1/2" D (M), 1/2" D (F) to 3/8" D (M), 3/8" D (F) to 1/4" D (M) Other information Supplied in a purpose-built storage case