Abstract: Holder for a rotary tool which holder is formed with a holder body comprising a rear drive end and a front connection end having a connection thread for the connection of the tool. The holder comprises a thrust collar having a flat contact surface facing a connection end of the holder. The holder comprises an axially movable operating means, a number of restraint elements placed in one or more spaces in the holder body which restraint elements in a first axial position of the operating means are prevented from radial movement in said spaces and which restraint elements in a second axial position of the operating means allow radial movement in said spaces. Each one of said spaces for the restraint elements is limited in the axial direction by a front limiting wall and a rear limiting wall, which two limiting walls are parts of the holder body.

Abstract: Holder for a rotary tool which holder is formed with a holder body comprising a rear drive end and a front connection end having a connection thread for the connection of the tool. The holder comprises a thrust collar having a flat contact surface facing a connection end of the holder. The holder comprises an axially movable operating means, a number of restraint elements placed in one or more spaces in the holder body which restraint elements in a first axial position of the operating means are prevented from radial movement in said spaces and which restraint elements in a second axial position of the operating means allow radial movement in said spaces. Each one of said spaces for the restraint elements is limited in the axial direction by a front limiting wall and a rear limiting wall, which two limiting walls are parts of the holder body.

Abstract: A saw blade includes a first edge having teeth and a second edge principally opposed to the first edge, which second edge extends in a first principal direction of extension along a first part of its principal extension and in a second principal direction of extension along a second part of its principal extension, neither said first nor said second principal direction of extension being parallel to a principal direction of extension of said first edge, but said first principal direction of extension forming a first and positive angle (A) with said principal direction of extension of said first edge and said second principal direction of extension forming a second and negative angle (B) with said principal direction of extension of said first edge.

Abstract: A saw blade includes a first edge having teeth and a second edge principally opposed to the first edge, which second edge extends in a first principal direction of extension along a first part of its principal extension and in a second principal direction of extension along a second part of its principal extension, neither said first nor said second principal direction of extension being parallel to a principal direction of extension of said first edge, but said first principal direction of extension forming a first and positive angle (A) with said principal direction of extension of said first edge and said second principal direction of extension forming a second and negative angle (B) with said principal direction of extension of said first edge.