90s Flite Controls Seat Post Binder Bolt, made in Santee, California, USA.  Purple anodized aerospace aluminum nuts, chromoly bolt, only 15 grams.  M6 bolt is 50mm in length.  Save 100 grams over a standard quick release binder bolt.  Great for your old Yeti, Fat Chance, Rock Lobster, Salsa, Cunningham, Ritchey or other classic mountain bike.  Buyer to pay $5.00 USPS Ground Advantage shipping with tracking.  Buyers outside the Continental US to use Ebay's International Shipping.  Thanks for looking!