Every detail of this heavy duty retractable key holder was built for rugged use and hard work. The extra durable polycarbonate case is impact resistant, and the tough Kevlar cord has been tested to over one million pulls, guaranteed to outlast any other retractable key holders on the market. The patented locking mechanism on the SUPER48 Key Holder will ensure your keys, tools, and other items stay right at your hip without dropping to the ground. Specifications Heavy Duty - 48" Kevlar Cord / 8-10 oz. / 15 keys Super Duty - 36" Kevlar Cord / 13-15 oz. / 22 keys Xtreme Duty - 28" Kevlar Cord / 15-20 oz. / 40 keys Belt clip converts to a belt loop for added security with included pin. Over sized 1-1/4 inch black split-ring 2-1/4 inch wide durable polycarbonate case