Components Includes 3 x steel reamers with cutting edges set at an angle of 63, 93 and 123 degrees, depending on the glow plug‘s seat angle: 1 x M8x1/123°/Ø4,5 mm 1 x M10x1/63°/Ø5,5 mm 1 x M10x1/93°/Ø4,5 mm 2 x centering guides (1 x M8x1; 1 x M10x1) 1 x allen key 2 mm