Nigara Hamono is located in Hirosaki which is a city at the very northen tip of the main island of Honshu. Their family has a 350 year old history of making knives and swords and more recently has expanded into structural steel beams for use in construction. Tsuyoshi Yoshizawa stands as the 8th generation smith in the lineage of blacksmiths at Nigara Hamono and creates knives with his yonger brother and two other craftsman.
The petty is the Japanese equivalent of the western style paring knife. They're usually a little longer and I could never go back after using one. The idea is all the on board work is done wit your gyuto or chef knife and everything in hand is done wit the petty. Not limited to capping strawberries, peeling, turning, or coring veggies, and smaller butchery tasks like chicken, small fish, or deboning a pork shoulder.
*These knives are extremely thin behind the edge, this gives them an unbelievable cutting feel but makes them more delicate than even other Japanese knives. Twisting and torquing the knife on the board or in an ingredient will certainly cause chipping. Make sure to use only up and down, forward and back motions with the knife.