Seiko SKX Chapter Ring makes an amazing difference! - See what you can do with yours. - YouTube
SKX013 Brushed Black Chapter Ring - SEIKO Mod Part - Lucius Atelier
Modded a Turtle Chapter ring to fit in a Heimdallr SKX007 case (that uses regular SKX007 chapter rings) Risky... but looks like it was worth it! : r/SeikoMods
SKX 007/009/173/175 Black Brushed Stainless Steel Lumed Chapter Ring – L.C.B.I
Chapter Ring SKX007 PLGS Style / Date Frame / Black – TOKEILAB.COM SEIKO MOD PARTS - USA Based online Store
Chapter Ring - SKX007/SRPD - Matt Black w Markers (Blue) - DLW WATCHES