Humminbird PTC UNB 2 Portable Soft Sided Carry Case - No Battery or Charger [740157-1NB] Hunting & Fishing 4" x 20 studs but

4" x 20 studs but with a smaller threaded stud inserted into the base

UPC: 089300131171

You can use wrench 60WR-4 to brace the housing when using this wrench

Factory Hot Gun Bluing

Humminbird PTC UNB 2 Portable Soft Sided Carry Case - No Battery or Charger [740157-1NB] Hunting & Fishing 4" x 20 studs butPTC UNB 2 Portable Soft Sided Carry Case No Battery or Charger The PTC UNB 2 is a portable carrying case for Humminbird HELIX 5 and HELIX 7 models, so you can take your Humminbird wherever the fish take you. This kit will require a battery and charger to operate the HELIX fish finder (sold separately). Portable Conversion Kit Soft sided portable bag with carry handle Transducer, Battery, & Charger storage compartments Hardware and HELIX 5 & HELIX 7