These climbers have aluminum lower shanks for a lighter weight. Bashlin climbers are popular with many climbers from utility to tree. The adjustable upper sleeve is steel, as are the replaceable gaffs themselves. These come with 2-1/2″ tree gaffs, top and bottom straps and 130D climbers pads made of durable latigo leather and gaff guards for protecting the gaffs. Made in the U.S.A.