Amazon.com: TEMPO Communications TM-500 Telephone Test Set | DSL-Compatible Lineman's Butt Set w/Headset | Tone and Pulse Dialing | ABN Bed of Nails & Spike Alligator Clips | Professional Grade (2023 Model) :
TRIPLETT, ABN, Telephone Line Test Sets, Lineman's Telephone Test Butt Set - 323NX2|3330 - Grainger
TRIPLETT Digital Specialty Meter with Case - Gray, AC/DC Voltage, Amperage, Butt Set for Temporary Communication in the Specialty Meters department at Lowes.com
What is a butt set?
Fluke Networks 22801001 TS22A Test Set with Piercing Pin Clips | TEquipment
Fluke Networks 22801009 TS22A Test Set with ABN | TEquipment