No markings or written info. Plastic wheel, approx 1-3/8" diameter. Size is 1-1/2" tall x 2-1/8" long (just the fixed portion, not including the sliding adjustment inner part that would make it variably longer). Pressure fits into aluminum sliding door (no brand found on the door, either.) Circa mid 1980's?
Body approx 9/16" wide (overall thickness). Approx 3/4" thick at the bumps.