diff --git a/app/Models/ProductCharacteristicsMaster.php b/app/Models/ProductCharacteristicsMaster.php
new file mode 100644
index 000000000..ecf6a3eb9
--- /dev/null
+++ b/app/Models/ProductCharacteristicsMaster.php
@@ -0,0 +1,60 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Database\Eloquent\SoftDeletes;
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+
+class ProductCharacteristicsMaster extends Model
+{
+     use SoftDeletes;
+
+    protected $fillable = [
+        'plant_id',
+        'line_id',
+        'item_id',
+        'work_group_master_id',
+        'machine_id',
+        'name',
+        'inspection_type',
+        'characteristics_type',
+        'upper',
+        'lower',
+        'middle',
+        'created_at',
+        'updated_at',
+        'created_by',
+        'updated_by',
+    ];
+
+    public function plant(): BelongsTo
+    {
+        return $this->belongsTo(Plant::class);
+    }
+
+    public function line(): BelongsTo
+    {
+        return $this->belongsTo(Line::class);
+    }
+
+    public function workGroupMaster(): BelongsTo
+    {
+        return $this->belongsTo(WorkGroupMaster::class);
+    }
+
+    public function machine(): BelongsTo
+    {
+        return $this->belongsTo(Machine::class);
+    }
+    // public function machine()
+    // {
+    //     return $this->belongsTo(\App\Models\Machine::class, 'machine_id');
+    // }
+
+    public function item(): BelongsTo
+    {
+        return $this->belongsTo(Item::class);
+    }
+}