SplitBall Screw-In Insulator, black

For attaching low-tension conductors to wood line posts. Allows easy entry of "wire" but prevents escape.

For easy installation, use a SplitBall Power Driver. See accessories tab below.

Compare Wood Post Insulators


380600 SplitBall Screw-In Insulator, black Back-ordered
Expected on 03/25/2016
0.08 $0.77

Common Uses

For securing rope, twine and wire to trees and wood posts.


  • Holds conductors 2" away from posts.
  • Ball is 1" across.
  • Screws in about 2".
  • Made of polyethylene with UV additive for extra long life.
  • Prepackaged in bags of 25. Sold individually.


Without Power Driver:

  1. Predrill hole in the wood post.
  2. Screw insulator completely into post. (Tip: Use a screwdriver--slide the blade between the halves of insulator and twist to screw in.)
With SplitBall Power Driver
(sold separately, see accessories tab above):
  1. Predrill holes in the wood post.
  2. Put bit end of SplitBall Power Driver into chuck of drill and tighten.
  3. Place power driver over the insulator so the slot in ball of insulator lines up with pin in cup of driver.
  4. Insert the screw tip of insulator into the predrilled hole.
  5. Thread conductor through insulator.

Listed below are recommended optional components or related items. Your particular situation may require alternative recommendations. Please call and talk to our consultants if there are any questions at 800-282-6631.
Item # 134100 - In Stock
Device to indicate the approximate voltage on your electric fence.
Item # 256500 - In Stock
EnduraSoft has high conductivity so it's suited for any length of fence and all low-impedance or wide-impedance energizers.
Item # 256900 - Back-ordered
Expected on 01/29/2016
Excellent for both permanent and portable fence situations because PE (polyethylene) filaments resist wear and abrasion.
Item # 335500 - In Stock
For instant in-the-field connections.
Item # 346000 - In Stock
Attaches to an electric fence to warn people that the fence is electrified.
Item # 380602 - Back-ordered
Expected on 12/18/2015
Allows use of a power drill to rapidly screw SplitBall insulators in and out of wood posts.
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They do a good job of holding conductors on our farm. We have found that many like them for their safety (no sharp edges). The lack of sharp edges reduces wear on the conductors. The power driver is an essential tool when installing these, otherwise you might have a few headaches (installation without the driver is possible, but much more difficult).