diff --git a/src/viewport-three/viewport-host.ts b/src/viewport-three/viewport-host.ts
index 2d7984b3..4d846e89 100644
--- a/src/viewport-three/viewport-host.ts
+++ b/src/viewport-three/viewport-host.ts
@@ -603,15 +603,23 @@ const TERRAIN_BRUSH_PREVIEW_FOLIAGE_BLOCKER_ERASE_COLOR = 0x5ec6df;
 const TERRAIN_BRUSH_PREVIEW_OFFSET = 0.05;
 const TERRAIN_GRID_RESIZE_EDGE_COLOR = 0xffd84d;
 const TERRAIN_GRID_RESIZE_ARROW_COLOR = 0xffffff;
+const TERRAIN_GRID_RESIZE_OUTLINE_COLOR = 0x05070c;
 const TERRAIN_GRID_RESIZE_OVERLAY_OFFSET = 0.12;
 const TERRAIN_GRID_RESIZE_EDGE_SEGMENTS = 32;
+const TERRAIN_GRID_RESIZE_EDGE_TUBE_RADIUS = 0.07;
+const TERRAIN_GRID_RESIZE_EDGE_OUTLINE_RADIUS = 0.115;
 const TERRAIN_GRID_RESIZE_EDGE_HOVER_MIN_THRESHOLD = 0.18;
 const TERRAIN_GRID_RESIZE_EDGE_HOVER_CELL_FACTOR = 0.35;
 const TERRAIN_GRID_RESIZE_EDGE_HOVER_FOOTPRINT_FACTOR = 0.08;
-const TERRAIN_GRID_RESIZE_ARROW_MIN_LENGTH = 0.8;
-const TERRAIN_GRID_RESIZE_ARROW_MAX_LENGTH = 2.4;
-const TERRAIN_GRID_RESIZE_ARROW_CELL_FACTOR = 1.25;
-const TERRAIN_GRID_RESIZE_ARROW_HEAD_LENGTH = 0.32;
+const TERRAIN_GRID_RESIZE_ARROW_MIN_LENGTH = 1.25;
+const TERRAIN_GRID_RESIZE_ARROW_MAX_LENGTH = 3.6;
+const TERRAIN_GRID_RESIZE_ARROW_CELL_FACTOR = 1.8;
+const TERRAIN_GRID_RESIZE_ARROW_SHAFT_RADIUS = 0.065;
+const TERRAIN_GRID_RESIZE_ARROW_SHAFT_OUTLINE_RADIUS = 0.11;
+const TERRAIN_GRID_RESIZE_ARROW_HEAD_RADIUS = 0.24;
+const TERRAIN_GRID_RESIZE_ARROW_HEAD_OUTLINE_RADIUS = 0.34;
+const TERRAIN_GRID_RESIZE_ARROW_HEAD_LENGTH = 0.55;
+const TERRAIN_GRID_RESIZE_ARROW_HEAD_OUTLINE_LENGTH = 0.68;
 const BOX_CREATE_PREVIEW_FILL = 0x89b6ff;
 const BOX_CREATE_PREVIEW_EDGE = 0xf3be8f;
 const PLACEMENT_PREVIEW_COLOR_HEX = "#89b6ff";