Handy to have around any microscopy laboratory, some would say such a wrench set would be indispensible. Keys securely snap into place for optimum leverage. Made of special heat-treated chrome-nickel alloy steel. Sharp high precision hex corners needed for a high precision fit. You can pay more for a wrench set of this type but you can not find a better quality wrench set.
English (5 keys)
3/16", 7/32", 1/4", 5/16", 3/8"