Check the listing for details. Extend-An-Arm Barbwire Extensions 1' Long - Vertical - Flat Mount- 2 Pack. Condition: New. Listed at 32.99 USD. These extensions are installed on existing fence - PVC (vinyl) or wood - and any other existing structures to include post, fence, brick, concrete, wall, etc. EXTENSIONS ARE FLAT OR SURFACE MOUNT. Fasteners are NOT included as they will be different depending upon your project. Extensions are VERTICAL. They come in a pack of two. PRICE IS FOR 2 EXTENSIONS. For similar extensions for chain link fence, please see our separate "Extend-An-Arm for Chain Link" listing. We also offer 45-degree arm extensions as well as various other extensions to include vertical and horizontal post and black ornamental aluminum. We invite you to contact customer service for questions. These fast and easy VERTICAL barbed wire / barbwire arm extensions were designed and are manufactured onsite at our facility in eastern North Carolina. The design was developed and implemented by our head engineer who brings to the table more than 42 years of experience in the industry. **Legal Disclaimer: All products in the "Extend-A" Line (including Extend-A-Post, Extend-An-Arm, and Extend-A-Section are the exclusive design and intellectual property of The Fence Department, Inc. We claim and reserve the right of all legal protections. Please do not infringe.