Specification :

powerful, tough and precision:
SK-2 Japan Material
HRC: 61-630
Most strict standard for accuracy in across flats.
Suitable for manufactures of:
electronic products
electrical products
toys
furniture, wooden products & project
plastic products.........etc.
size: Pozi, square, hex, Y tape, spanner, philips, torx, spling, tri-wing, tri-angle, clutch, torq