SA 3 67 Schwinn Approved One Piece Cranks 4 1/2"

SA 3 67 Schwinn Approved One Piece Cranks 4 1/2" 28tpi. Length is 4 1/2". It uses a 28tpi (threads per inch) bottom bracket - not 24tpi. I tested the threads with a tange BB to make sure they are not loose or stripped - they are fine.

Vintage - 1967.

Condition - Unused with some minor shelf wear.