These coping blades with pins are to be installed on Stanley profile saw as shown below.
15TPI
6 – 1/2″ Pin ends
For medium turns in wood 1/8″ to 1 ½”thick and soft metals 1/16″ to 1/4″ thick
20TPI
6 – 1/2″ Pin ends
For medium turns in wood 1/16″ to 3/4″ thick and soft metals 1/32″ to 1/8″ thick