A rotor of a vertical shaft impact crusher comprises a vertical rotor wall segment having a first wall portion being substantially tangential in relation to the rotor and a second wall portion being angled in relation to said first wall portion. A tip holer (50) for mounting at an outflow opening of such a rotor comprises a holding part (52) for holding a wear tip (36). A fastening means (60, 62) is attached to the holding part (52). The fastening means (60, 62) is adapted to extend along said first wall portion and through said second wall portion from one side thereof. A fixing means is detachably fixable to the fastening means (62) at the other side of said second wall portion.