Test coupling 1: G1/4 ---- for Komastu/Kobelco. Test coupling 2: G1/8 ---- for Kawasaki/Caterpillar. Test coupling 3: G3/8 ---- for Daewoo/Hyundai/Kato. Test coupling 4: M10 1 ---- for Komastu - 5/6. Test coupling 5: M10 1.25 ---- for Komastu -7/8.
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