Rotary Trimmer Head Fast Loading 450

📌 Rotary 27-13377 Trimmer Head – Key Specifications
Type: Fast loading / Speed Feed trimmer head — semi-automatic line feed that lets you load and advance line quickly without full spool winding.
Part Number: 27-13377 (Rotary) / often just 13377 in catalogs.
Overall Diameter: ≈ 4½ inches across the head.
Line Capacity: Holds roughly 15 ft of trimmer line total.
Line Diameter: Works with .095 in. (.095″) line, and can accept up to .105 in. maximum of most line types.
Compatibility:
Replaces Shindaiwa 78890-21001 style bump heads.
Also fits many trimmers where this style head uses a standard straight shaft with bump feed system — including Echo, Stihl, Red Max, Troy-Bilt, and others.
Feed Method: Bump feed — advance line by tapping the head on the ground as the spring mechanism lets line out during operation.
Adapters: Generally includes hardware/adapters for common straight-shaft threaded spindles (e.g., 7 mm, 8 mm, 10 mm thread sizes), so it fits a wide range of trimmers.
Made: Typically manufactured in the U.S.A. by Rotary.