diff --git a/scripts/wk/clone/ddrescue.py b/scripts/wk/clone/ddrescue.py
index a1178fe1..9e85cd90 100644
--- a/scripts/wk/clone/ddrescue.py
+++ b/scripts/wk/clone/ddrescue.py
@@ -127,42 +127,42 @@ TIMEZONE = pytz.timezone(cfg.main.LINUX_TIME_ZONE)
 # Classes
 class BlockPair():
   """Object for tracking source to dest recovery data."""
-  def __init__(self, source, destination, model, working_dir):
-    """Initialize BlockPair()
-
-    NOTE: source should be a wk.hw.obj.Disk() object
-          and destination should be a pathlib.Path() object.
-    """
-    self.sector_size = source.phy_sec
-    self.source = source.path
-    self.destination = destination
-    self.map_data = {}
-    self.map_path = None
-    self.size = source.size
-    self.status = {
+  def __init__(
+      self,
+      source_dev: hw_disk.Disk,
+      destination: pathlib.Path,
+      working_dir: pathlib.Path,
+      ):
+    self.sector_size: int = source_dev.phy_sec
+    self.source: pathlib.Path = pathlib.Path(source_dev.path)
+    self.destination: pathlib.Path = destination
+    self.map_data: dict[str, bool | int] = {}
+    self.map_path: pathlib.Path = pathlib.Path()
+    self.size: int = source_dev.size
+    self.status: dict[str, float | int | str] = {
       'read-skip':  'Pending',
       'read-full':  'Pending',
       'trim':       'Pending',
       'scrape':     'Pending',
       }
-    self.view_map = 'DISPLAY' in os.environ or 'WAYLAND_DISPLAY' in os.environ
-    self.view_proc = None
+    self.view_map: bool = 'DISPLAY' in os.environ or 'WAYLAND_DISPLAY' in os.environ
+    self.view_proc: subprocess.Popen | None = None
 
     # Set map path
     # e.g. '(Clone|Image)_Model[_p#]_Size[_Label].map'
-    map_name = model if model else 'None'
-    if source.bus == 'Image':
+    map_name = source_dev.model
+    if source_dev.bus == 'Image':
       map_name = 'Image'
-    if source.parent:
-      part_num = re.sub(r"^.*?(\d+)$", r"\1", source.path.name)
+    if source_dev.parent:
+      part_num = re.sub(r"^.*?(\d+)$", r"\1", self.source.name)
       map_name += f'_p{part_num}'
     size_str = std.bytes_to_string(
       size=self.size,
       use_binary=False,
       )
     map_name += f'_{size_str.replace(" ", "")}'
-    if source.raw_details.get('label', ''):
-      map_name += f'_{source.raw_details["label"]}'
+    if source_dev.raw_details.get('label', ''):
+      map_name += f'_{source_dev.raw_details["label"]}'
     map_name = map_name.replace(' ', '_')
     map_name = map_name.replace('/', '_')
     map_name = map_name.replace('\\', '_')
@@ -197,7 +197,7 @@ class BlockPair():
     """Get percent rescued from map_data, returns float."""
     return 100 * self.map_data.get('rescued', 0) / self.size
 
-  def get_rescued_size(self) -> float | int:
+  def get_rescued_size(self) -> int:
     """Get rescued size using map data.
 
     NOTE: Returns 0 if no map data is available.
@@ -211,7 +211,7 @@ class BlockPair():
     NOTE: If the file is missing it is assumed that recovery hasn't
           started yet so default values will be returned instead.
     """
-    data = {'full recovery': False, 'pass completed': False}
+    data: dict[str, bool | int] = {'full recovery': False, 'pass completed': False}
 
     # Get output from ddrescuelog
     cmd = [
@@ -353,9 +353,8 @@ class State():
     """Add BlockPair object and run safety checks."""
     self.block_pairs.append(
       BlockPair(
-        source=source,
+        source_dev=source,
         destination=destination,
-        model=self.source.model,
         working_dir=self.working_dir,
         ))