Here are Lionel & K-line O Gauge Straight O27 Tubular Track: 6-6550 [35]. These rails have a tinplate construction.

This item has been graded per TCA standards C-6: Very Good based on visual appearance. There are light nicks, scratches, and spots of surface rust on the rails. There is some light dust on the rails. The original box is not included. Overall condition is Very Good.

Condition: Very Good (C-6)
Operational Status: Not Applicable
Original Box: No

Manufacturer: Lionel
Road Name: **** No Road Name

Scale/Era: O Modern
Model Type: Track

The SKU for this item is 5978733.