Tension Handling: Strain and tension bobbins absorb mechanical pulling forces at line endpoints, sharp corners, or dead-end posts.Arc Reduction: Their spool or reel shapes increase creepage distance to reduce power loss, surface tracking, and arcing.Material Options: Available in heavy-duty porcelain (fireproof, ideal for high heat or bushfire-prone areas) or durable UV-stabilized plastics/GFT for standard security fencing