WBM Wheel Loader Manual Angle Blades are used in conditions where straight and angled dozing, grading or general clearing is required. They provide a more economical alternative to Hydraulic Angle Blades, with the angling operation being done manually rather than hydraulically. Manual angle blades can be operated in three positions: 25° angled left, 25° angled right and in the straight position. When in the straight blade position, the wheel loader linkage enables the operator to pitch a blade forward or back to alter the grading or cutting ability of the blade.