A cutting kit comprising a hand-held cutting tool that comprises: • a box body made of an electrically non-conductive material; • a handgrip for a hand of a user provided on said body; • cutting means made of an electrically conductive material extending from said body; • an electric driving circuit arranged within said body for driving said cutting means; • command and control means of said driving circuit arranged on said handgrip; and • a safety circuit adapted to intervene on said driving circuit to control said cutting means independently of the control of said command and control means, said safety circuit comprising - an electrically conductive element located on the handgrip, in a manner to be in contact with the hand that holds the tool, - a circuit line that connects said cutting means to said electrically conductive element, - electric power generation means arranged in said circuit line, - voltage or current detecting means arranged in said circuit line, and - control means (84, 6) adapted to intervene on said driving circuit in response to the detection of said detecting means, when a predetermined threshold value is exceeded, to override the control of said command and control means and force at least the stopping of the operation of said cutting means; wherein said threshold value is a value corresponding to a value detected when said cutting means accidentally make contact with, and are in the stage of incipient injury to, the hand of the user not holding the tool; the cutting kit being characterized in that it also comprises footwear means that can be worn by the user to ensure electrical conductivity between at least one of the user's feet and the ground, said footwear means being adapted to create an impedance on the circuit bridge formed between the handgrip hand and ground at least less than half the impedance that is created on a circuit closing bridge external to the tool, through the user's body, between said cutting means and said electrically conductive element, in said stage of incipient injury corresponding to said threshold value. • a box body made of an electrically non-conductive material; • a handgrip for a hand of a user provided on said body; • cutting means made of an electrically conductive material extending from said body; • an electric driving circuit arranged within said body for driving said cutting means; • command and control means of said driving circuit arranged on said handgrip; and • a safety circuit adapted to intervene on said driving circuit to control said cutting means independently of the control of said command and control means, said safety circuit comprising - an electrically conductive element located on the handgrip, in a manner to be in contact with the hand that holds the tool, - a circuit line that connects said cutting means to said electrically conductive element, - electric power generation means arranged in said circuit line, - voltage or current detecting means arranged in said circuit line, and - control means (84, 6) adapted to intervene on said driving circuit in response to the detection of said detecting means, when a predetermined threshold value is exceeded, to override the control of said command and control means and force at least the stopping of the operation of said cutting means; wherein said threshold value is a value corresponding to a value detected when said cutting means accidentally make contact with, and are in the stage of incipient injury to, the hand of the user not holding the tool; the cutting kit being characterized in that it also comprises footwear means that can be worn by the user to ensure electrical conductivity between at least one of the user's feet and the ground, said footwear means being adapted to create an impedance on the circuit bridge formed between the handgrip hand and ground at least less than half the impedance that is created on a circuit closing bridge external to the tool, through the user's body, between said cutting means and said electrically conductive element, in said stage of incipient injury corresponding to said threshold value. - an electrically conductive element located on the handgrip, in a manner to be in contact with the hand that holds the tool, - a circuit line that connects said cutting means to said electrically conductive element, - electric power generation means arranged in said circuit line, - voltage or current detecting means arranged in said circuit line, and - control means (84, 6) adapted to intervene on said driving circuit in response to the detection of said detecting means, when a predetermined threshold value is exceeded, to override the control of said command and control means and force at least the stopping of the operation of said cutting means; wherein said threshold value is a value corresponding to a value detected when said cutting means accidentally make contact with, and are in the stage of incipient injury to, the hand of the user not holding the tool; the cutting kit being characterized in that it also comprises footwear means that can be worn by the user to ensure electrical conductivity between at least one of the user's feet and the ground, said footwear means being adapted to create an impedance on the circuit bridge formed between the handgrip hand and ground at least less than half the impedance that is created on a circuit closing bridge external to the tool, through the user's body, between said cutting means and said electrically conductive element, in said stage of incipient injury corresponding to said threshold value.