Stainless Steel, BigRing Key Holder, Made Of A Continuous Loop Of Sturdy Stainless Steel, Perfect For Those Of Us With More Than The Average Number Of Keys, Large & Roomy, Yet Lightweight & Easy To Carry, Includes 8 #.5 Sized Stainless Steel S Biners, In 2 Colors, 4 Stainless & 4 Black, To Easily Identify Keys At A Glance Or Use 1 Of The S-Biners To Attach The BigRing To A Belt Loop, Purse Strap, Or Zipper Pull, Or To Hook To A Second Ring, S-Biners Remove & Reattach Quickly & Securely Or To Take A Single Key With You, Can Add More S-Biners.