This is the R2 Curved Track 30 Degree 5'5'' Diameter (Bulk of 12) G Scale Brass Model Train Track by LGB.
Medium radius R2 curves offer smoother, more realistic operation for larger trains. 30 degrees means 12 sections make a 360 degree circle. LGB track has solid brass rails and realistic ties. It's rugged and reliable for years of indoor or outdoor use.