1. Dhexroor: Dhexroorka caadiga ah waxaa ka mid ah M3, M4, M5, M6, M8, M10, M12, M14, M16, M18, M20, iwm, oo millimitir ah. 2. Dhererka dunta: ulaha dunta leh ee dhexroorkoodu kala duwan yahay ayaa caadi ahaan u dhigma garoomo kala duwan. Tusaale ahaan, garoonka M3 inta badan waa 0.5 millimitir, M4 inta badan waa 0.7 millimitir.
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