A cutting insert for mounting in a tool for chip removing machining, comprising - an upper side and an opposite lower side between which a centre axis extends, wherein the upper side comprises a rake face and wherein the lower side comprises a bottom support surface for contacting a bottom contact surface of a tool body, - a side surface extending between the upper side and the lower side around the periphery of the cutting insert, and - at least one cutting edge formed in a transition between the upper side and the side surface, wherein the cutting insert is formed by sintering together two compacted powder parts (106, 107), one of the compacted powder parts after sintering forming an upper part and the other one forming a lower part, the upper part being misaligned in relation to the lower part, an imaginary plane (P I) perpendicular to the centre axis being defined between the lower part and the upper part, wherein the cutting insert is double-sided with the lower side identical to the upper side, characterised in that a groove is provided in the side surface, centred on said imaginary plane (P I) and extending around the circumference of the cutting insert, said groove having a width (w groove) of between 0.1 mm-20% of a height h of the cutting insert, preferably 0.2 mm-10% of said height h, wherein a recess centred on the imaginary central plane (P I) and extending around the circumference of the cutting insert is provided in the side surface, the groove being formed in the recess, wherein said recess comprises a plurality of support surfaces (111a, 111b) configured to make contact with contact surfaces (207, 208) provided in a tool body, said support surfaces (111a, 111b) being formed at an angular deviation from the centre axis of maximum ±15°. - an upper side and an opposite lower side between which a centre axis extends, wherein the upper side comprises a rake face and wherein the lower side comprises a bottom support surface for contacting a bottom contact surface of a tool body, - a side surface extending between the upper side and the lower side around the periphery of the cutting insert, and - at least one cutting edge formed in a transition between the upper side and the side surface, wherein the cutting insert is formed by sintering together two compacted powder parts (106, 107), one of the compacted powder parts after sintering forming an upper part and the other one forming a lower part, the upper part being misaligned in relation to the lower part, an imaginary plane (P I) perpendicular to the centre axis being defined between the lower part and the upper part, wherein the cutting insert is double-sided with the lower side identical to the upper side, characterised in that a groove is provided in the side surface, centred on said imaginary plane (P I) and extending around the circumference of the cutting insert, said groove having a width (w groove) of between 0.1 mm-20% of a height h of the cutting insert, preferably 0.2 mm-10% of said height h, wherein a recess centred on the imaginary central plane (P I) and extending around the circumference of the cutting insert is provided in the side surface, the groove being formed in the recess, wherein said recess comprises a plurality of support surfaces (111a, 111b) configured to make contact with contact surfaces (207, 208) provided in a tool body, said support surfaces (111a, 111b) being formed at an angular deviation from the centre axis of maximum ±15°.