This is 4 string banjo geared machine head. 4 pieces banjo machine heads mission:1/4. The four tuners were made of brass and iron.
4 string banjo machine heads, Nickel plated,White acrylic button 328N-BW-4p
4 string banjo geared machine heads White buttons 4 pieces 328N-BW
Cheerock 4-String Ebony Maple Composite Banjo Bridge with Dual-Pivot Design
4 string Banjo geared nickel machine head tuner with various buttons 4ps 328N
4 string banjo geared machine heads with black buttons 4p 328N-BX
4 string Banjo geared Chrome machine head tuner with various buttons 4ps 328C