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							|  |  |  | oshpark | 
					
						
							|  |  |  | The minimum specs for 4 layer orders are  | 
					
						
							|  |  |  | 5 mil (0.127 mm) traces with 5 mil (0.127 mm) spacing,  | 
					
						
							|  |  |  | and 10 mil (0.254 mm) drills with 4 mil (0.1 mm) annular rings. | 
					
						
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							|  |  |  | seeedstudio | 
					
						
							|  |  |  | minimum drill hole: 0.2 mm width | 
					
						
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