This is a cow bone saddle the same size as the Yamaha WT83730E. I'm sharing some of the ones I bought for my Yamaha guitar because they were well-received. Size: Approximately 75mm long, 3mm thick, 9.7mm high Material: Cow bone, unbleached It has almost the same shape as the Yamaha WT83730E, so it can be used directly on guitars such as APX500III/APX1000/LL series, CPX1000, FS820, FG820, FG820-12, LS6 ARE, and FS-TA. In the third and fourth photos, the white one on top is the genuine Yamaha saddle (removed from a guitar), and the cream-colored one below is the cow bone saddle. It's difficult to find cow bone saddles that are the perfect size for Yamaha guitars, so please give these a try! Price is for two saddles. Price is not negotiable. I also have a listing for four saddles, so please take a look.