Below is where I got all the pieces for this zipline project.
Petzl Tandem Speed Pulley is available here: http://www.karstsports.com/petp21spetan.html
1" diameter x 24" long turnbuckle with jaws on each end (I actually used 3/4 x 24" but I said 18" in the video):
http://www.tessco.com/products/displayProductInfo.do?sku=387877
More turnbuckles here:
http://www.e-rigging.com/store_products.cfm?Subcat_ID=242&Cat_ID=61&Menu_Choice=Catalog
Galvanized wire rope or steel cable here:
http://www.e-rigging.com/store_products.cfm?Subcat_ID=193&Cat_ID=70&Menu_Choice=Catalog
Carabiners:
http://www.karstsports.com/aluminum.html
How to choose a climbing harness:
http://www.rei.com/learn/expert-advice/climbing-harness.html
