日本NAC长堀套筒312EU15 日本NAC长堀套筒312EU15 Configured Specifications   Single Product/Set Classification Single Item Socket   Application Impact   Insertion Angle (Shaft measurement when electric drill) (mm) 9.52   Socket shape Hexagonal   Width across flat dimension (S Measurement) 12   Insertion Angle (Shaft measurement when electric drill) (Inch) 3/8   Overall length (L dimension) 150