diff --git a/motor_database.cfg b/motor_database.cfg
index 9584e97..72adeee 100644
--- a/motor_database.cfg
+++ b/motor_database.cfg
@@ -917,6 +917,20 @@ holding_torque: 0.4
 max_current: 1.68
 steps_per_revolution: 200
 
+[motor_constants usongshine-17HS8401]
+resistance: 2
+inductance: 0.0049
+holding_torque: 0.20
+max_current: 1.5
+steps_per_revolution: 200
+
+[motor_constants usongshine-17hs4401S]
+resistance: 1.5
+inductance: 0.0028
+holding_torque: 0.42
+max_current: 1.5
+steps_per_revolution: 200
+
 [motor_constants usongshine-17hs4023]
 #Generic Usongshine Nema 17 Pancake Stepper 
 resistance: 4