●Made in the city of the brand tool, Barrobe, Spain, the thread saw blade is well known for its high quality ●Not only can it be used for hand pulled thread saw machines, it can also be used with Hegner thread saw machines ●The ultra-fine No.3/0 No. 0 No. 2 can be used for precious metals, shells, copper, thin sheet metal, and the thin No. 4 No. 6 can be used for all types of metal to oak wood