They are designed to be used with pneumatic and power tools where higher torque and force is required. 1 X 1/2" Socket Driver. 1 X 33 Piece Impact Bit Set 25mm.
Solid basic impact set that can take quite some abuse.
Good functional set but the sidewalls on some of the sockets are quite thick limiting their use in tight spots especially the 10mm, comparing to other impact sets i have. The included bit set is ok, has multiple of the same square and star drive bits rather than a wider assortment. Value is very good for around $80 but there are better options if you have a $150 budget.