New Old Stock Delta 24" Scroll Saw Guide Post part number 430-02-110-0003.  7" Long.  Fits:  

40-205 Type 1 Industrial Scroll Saw
40-211 Type 1 Industrial Scroll Saw
40-213 Type 1 Industrial Scroll Saw
40-305 Type 1 Industrial Scroll Saw
40-306 Type 1 Industrial Scroll Saw
40-311 Type 1 Industrial Scroll Saw
40-313 Type 1 Industrial Scroll Saw
40-440 Type 1 Industrial Scroll Saw
40-416 Type 1 Scroll Saw
40-406 Type 1 Scroll Saw