Doohickey (built in alternative to railroad spike) found on a Vega. Anybody know what it's called? : r/banjo

Suspicious Snail #20 - Suspicious Snail Club

Railroad Spikes vs Sliding Capo for quick key change - Discussion Forums - Banjo Hangout

Cleaver Railroad Spike Fixed Blade Knife - Smoky Mountain Knife Works

5th String Banjo Spikes – Deering® Banjo Company

5th String Banjo Spikes – Deering® Banjo Company

5th String Banjo Spikes – Deering® Banjo Company

Finally got railroad spikes installed. Now I have a question (in comments) : r/banjo

1924 Vega Style N, 5 String Conversion - Banjo Hangout

Any Type of 5th String Capo Other Than Spike or Sliding Capo? - Discussion Forums - Banjo Hangout

1925 Vega Special #2 5-String Openback Banjo

1964 Vega SS-5 Folkore Longneck 5-String Banjo