The set contains 9 pieces of industrial-grade ball end bits made of premium S2 steel, compatible with all ball end bolts and screws.
All the bits have strong magnetic tips, will hold the screws and bolts in place.
Name: Ball End Hex Bit Set
Material: S2 steel
Head Type: Ball End head
Color: Black
Length: 100mm
Type of shank: 6.35mm ( 1/4 inch )hex
Size: H10, H8, H6, H5, H4, H3, H2.5, H2, H1.5
Due to low torque to can't increase effort , ball end hex bits are more great for 1/4'' hex shank screwdriver or other hand tools; not well for power drill because of low torque, that it will leads to ball end will be rounded over, we strongly recommend that using it on hand tools for the best results