1. Made of high quality metal material, durable to use. 
2. Allow lens become a Marco lens on camera body. 
3. It enables lens auto-diaphragm control. 
4. It is a very useful and helpful gear for you to save money to buy extra filter lenses.
Specification:
  
	| 
			Package Weight
		 | 
	
			
		  
			
					| One Package Weight | 
			
				0.02kgs / 0.05lb
			 | 
					 
		   
		 
			
		  
			
					| One Package Size | 
			
				21cm * 15cm * 1cm / 8.27inch * 5.91inch * 0.39inch
			 | 
					 
		   
		 
			
			
		  
			
					| Carton Weight | 
			
				4.80kgs / 10.58lb
			 | 
					 
		   
		 
			
		  
			
					| Carton Size | 
			
				42cm * 32cm * 32cm / 16.54inch * 12.6inch * 12.6inch
			 | 
					 
		   
		 
			
		  
			
					| Loading Container | 
			
								20GP: 620 cartons * 240 pcs = 148800 pcs 
								40HQ: 1439 cartons * 240 pcs = 345360 pcs 
			 | 
					 
		   
		 
		 |