11 keys. High quality allow steel. Industrial quality. This quality Eklind Hex-L Key Set is the industry standard. and manufactured using the finest quality Eklind Alloy Steel. It is hardened, tempered and finished to resist rust. All Eklind keys meet or exceed ANSI B18.3 and Fed. Spec. GGG-K-275D. www.eklindtool.com. Made in USA.