STEER Engineering [P] Ltd offers Single Kneading Disc. STEER Engineering [P] Ltd is an ISO 9001 certified company. Single Kneading Disc is bi-lobed and is a single segmented element. This element has a step provided on both sides of the element. The number of keyways allows for a twist angle of 15, 30, 45, 60 and 90 degree orientations in left or right handed direction.