45-piece hex key combo tool set includes both SAE and metric hex keys with 1 SAE fold-up holder and 1 mm fold-up holder

Keys are laser-etched and marked with size identification

Keys made resistant to distortion from rotational force

Keys resists abrasion， oxidation， and corrosion

Short arm keys offers easy access to limited confined spaces

Long arm keys to allow access to hard-to-reach locations

Set includes: 12 long arm SAE: 1/16 in.， 5/64 in.， 3/32 in.， 7/64 in.， 1/8 in.， 9/64 in.， 5/32 in.， 3/16 in.， 7/32 in.， 1/4 in.， 5/16 in. and 3/8 in.; 13 short arm metric: 1.5 mm， 2 mm， 2.5 mm， 3 mm， 4 mm， 4.5 mm， 5 mm， 5.5 mm， 6 mm， 7 mm， 8 mm， 9 mm and 10 mm

10 SAE folding hex set: 1/16 in.， 5/64 in.， 3/32 in.， 1/8 in.， 5/32 in.， 3/16 in.， 7/32 in.， 1/4 in.， 5/16 in. and 3/8 in.; 10 folding metric hex set includes: 1.5 mm， 2 mm， 2.5 mm， 3 mm， 4 mm， 5 mm， 5.5 mm， 6 mm， 8 mm and 10 mm