Audible Electronic Edge Finder LED Voice 3/4" Shank, 4" Long CNC Milling Lathe Electronic AUDIBLE Edge Finder Diameter of holding bar: 3/4'' Shank ; Highly visible lights Length: 4''; Accuracy: 0.0005" Wooden case INCLUDED; Wooden case dimension: 2-1/2''L x 5-1/2''W x 1-1/4''H Quantity: 1; Shipping Weight: 8 ounce ; Batteries NOT INCLUDED