Check the listing for details. Silver Pulleys and Idlers (GT2 20T, GT2 16T). Condition: New. Listed at 1.29 USD. Silver Pulleys and Idlers (GT2 20T, GT2 16T) Here are the full compliment of GT2 20T and GT2 20T pulleys and idlers. If you want to purcase the GT2 80T please search for "80T" and add it through that product page. Please add these individually, first by choosing whether you are looking for the pulley or idler, then choosing the number of teeth, and then the diameter / width. All pulleys and idlers are 5mm bore. Here are the full compliment of GT2 20T and GT2 20T pulleys and idlers. If you want to purcase the GT2 80T please search for "80T" and add it through that product page. Please add these individually, first by choosing whether you are looking for the pulley or idler, then choosing the number of teeth, and then the diameter / width. All pulleys and idlers are 5mm bore.eBay integration by