The Ember 3 No. 99 replacement blade is made of a2 tool steel that is hardened 60-62 Rockwell, cryogenic treated, and fully surface ground.
Note: This iron is slightly shorter to fit most Stanley type side rabbet planes.
Blade Size – ½" wide – 3" long – 1/8" thick
Blade - Cryogenic treated A2 tool steel 60-62 Rockwell
