Genuine Super Rotomatic® 109BC 3x3 Black Chrome

The 109 Series 3-step button gives these machine heads a distinctive look and sets them apart from other Rotomatics®. The housing provides a maximum bearing for worm, gear and string post. Gear ratio is 14:1. Worm and gear are precision-cut for perfect meshing. eliminating backlash and slippage. Countersunk tension screw permits player to regulate turning tension to any degree. Enclosed gear box with special lubricant for a lifetime of trouble-free service.

• Sealed-in, lubricated gears
• 14:1 gear ratio
• 25/64” post hole
• Post length to hole: 23mm
• Overall post length: 28.2mm
• Weight per pc/per set: 1.6oz/9.6oz
• Max. string gauge: .074”
• Hardware included (bushings, washers, screws)

Drop-in replacement for:
102-18 Series
102V Series
103 Series
106 Series
109-18 Series
135 Series (Top mounting hole will be visible)
136 Series (Top mounting hole will be visible)
502 Series
509 Series

Available in:
For standard guitars, 3 Treble and 3 Bass, Set of 6
No. 109N Nickel
No. 109C Chrome
No. 109G Gold
No. 109BC Black Chrome

All Grover products sold by us are genuine, official Grovers in original retail packaging.