A metal cutting tool comprising a main body made of cemented carbide, cermet, ceramic, steel or high-speed steel, and a multi-layer wear protection coating, wherein the wear protection coating comprises - an lower layer having the overall composition Ti m Al (1-m) N with 0.25 < m < 0.55 and an overall thickness of the lower layer of from 500 nm to 3 μm, wherein the lower layer consists of 50 to 600 pairs of alternately stacked sub-layers and with the sequence (A-B-A-B-...), the sub-layers having the composition Ti a Al (1-a) N with 0.45 ≤ a ≤ 0.55 and a thickness of from 1 nm to 10 nm, wherein the first sub-layer in the layer stack of sub-layers and has a layer thickness of from 5 nm to 50 nm, the sub-layers having the composition Ti b Al (1-b) N with 0.25 ≤ b ≤ 0.40 and a thickness of from 1 nm to 10 nm, and the sub-layers and having different stoichiometrical compositions with (a-b) ≥ 0.10 - an upper layer being desposited immediately on the lower layer and having the overall composition Ti n Al o Si p N with n+o+p=1 and 0.30 ≤ n ≤ 0.50, 0.40 ≤ o ≤ 0.60 and 0.05 ≤ p ≤ 0.20 and an overall thickness of the upper layer of from 500 nm to 3 μm, wherein the upper layer consists of 30 to 400 triples of alternately stacked sub-layers, and with the sequence (C-D-E-C-D-E-...) the sub-layers of the upper layer being defined in the same way as the sub-layers of the lower layer, and the sub-layers of the upper layer being defined in the same way as the sub-layers of the lower layer, and the sub-layers and having different stoichiometrical compositions with (a-b) ≥ 0.10, and the sub-layers having the composition Ti x Al y Si z N with x+y+z=1 and 0.20 ≤ x ≤ 0.45, 0.20 ≤ y ≤ 0.45 and 0.20 ≤ z ≤ 0.45 and a thickness of from 1 nm to 10 nm. - an lower layer having the overall composition Ti m Al (1-m) N with 0.25 < m < 0.55 and an overall thickness of the lower layer of from 500 nm to 3 μm, wherein the lower layer consists of 50 to 600 pairs of alternately stacked sub-layers and with the sequence (A-B-A-B-...), the sub-layers having the composition Ti a Al (1-a) N with 0.45 ≤ a ≤ 0.55 and a thickness of from 1 nm to 10 nm, wherein the first sub-layer in the layer stack of sub-layers and has a layer thickness of from 5 nm to 50 nm, the sub-layers having the composition Ti b Al (1-b) N with 0.25 ≤ b ≤ 0.40 and a thickness of from 1 nm to 10 nm, and the sub-layers and having different stoichiometrical compositions with (a-b) ≥ 0.10 - an upper layer being desposited immediately on the lower layer and having the overall composition Ti n Al o Si p N with n+o+p=1 and 0.30 ≤ n ≤ 0.50, 0.40 ≤ o ≤ 0.60 and 0.05 ≤ p ≤ 0.20 and an overall thickness of the upper layer of from 500 nm to 3 μm, wherein the upper layer consists of 30 to 400 triples of alternately stacked sub-layers, and with the sequence (C-D-E-C-D-E-...) the sub-layers of the upper layer being defined in the same way as the sub-layers of the lower layer, and the sub-layers of the upper layer being defined in the same way as the sub-layers of the lower layer, and the sub-layers and having different stoichiometrical compositions with (a-b) ≥ 0.10, and the sub-layers having the composition Ti x Al y Si z N with x+y+z=1 and 0.20 ≤ x ≤ 0.45, 0.20 ≤ y ≤ 0.45 and 0.20 ≤ z ≤ 0.45 and a thickness of from 1 nm to 10 nm.