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				Originally posted by Snowtractor  
Hi Jordan, 
 the red ones are the ones I used but the blue ones swivel also. They should be readily available at a heavy truck place. Like Fort Garry Industries or such. 
Sean 
			
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 Hi Jordan, the picture shows a standard Meritor/rockwell spring kit for "Q" type truck air brakes. Any heavy truck parts shop will be able to get these for you.
Paul