ElectroBraid IROLLB10-EB Roller Post Insulators, Black Black wood-post insulator Fastens with nail, j-bolt, most other fasteners Nails included For use on the outside and inside corners Black wood-post insulator Fastens with nail, j-bolt, most other fasteners For use on the outside and inside corners 10 Black insulators per bag ElectroBraid is Americas #1 Horse Fence - Safe, Secure and Simple to install