KSEM SE 3D 5D 7D 8.5D 10D 12D Extended U Drill 12.5-40mm high precision crown bit interchangeable tungsten carbide bit insertion

KSEM SE 3D 5D 7D 8.5D 10D 12D Extended U Drill 12.5-40mm high precision crown bit interchangeable tungsten carbide bit insertion

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