Wireline Bottom Subs / Bull Nose Subs

Industry proven wireline bottom sub design, made more productive, safe, and durable

Yellow Jacket Oil Tools bottom subs for wireline and e-line applications, also referred to as bull nose subs or bull plugs, offer industry proven design with improvements that increase productivity, user safety, and tool durability.

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Wireline Bottom SubsMore Productive

The fluted gripping surface increases pipe wrench grip and torque for faster tool string assembly and disassembly.


With fluted gripping, wrenches are less likely to slip and injure users.

More Durable

Fluted gripping surface outlasts the industry-standard, knurled style gripping.

Premium, heat treated 4340 steel improves durability.

Sub Styles

  • Bull Plug
  • Tapped Bull Plug
  • PSA Bull Plug

See the tooling product list for sizes and styles available.

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