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Description
B20K On/Off Speed Knob Fits Replacement Nail Drill
SPECIFICATION
- Product type: Replacement speed control knob
- Model: B20K
- Function: On/Off switch and speed adjustment
- Compatibility: Fits compatible electric nail drill machines using B20K potentiometer (Old Version Design)
- Control: Smooth rotary speed control
- Design: Compact, durable, and easy to install
- Nut and washer included
DESCRIPTION
- The B20K On/Off Speed Knob is a reliable replacement part designed for electric nail drill machines that use a B20K potentiometer. This control knob allows smooth adjustment of drill speed while integrating an on/off function for convenient operation. Ideal for repairing or restoring nail drill units, it helps maintain precise control and consistent performance during nail services.
- NOTE: Please double check your PC Boars is a Old Version Design:

FEATURES
- Integrated on/off switch with speed control functionality
- Smooth and precise rotary adjustment
- Designed specifically for B20K nail drill systems
- Durable construction for long‑term use
- Easy replacement for worn or damaged knobs
INSTALATION NOTES
- Disconnect power and unplug the unit before installation.
- Open the control box housing to access the speed control.
- Remove the old control by desoldering it from the PC board.
- Install the new control into position and re-solder the pins to the corresponding terminals on the PC board.
- Reinstall the PC board into position and secure it to the panel with the nut and washer.
- Reassemble the housing, restore power, and test the ON/OFF function and speed adjustment.
COLOR ACCURACY
- We have made every effort to make the colors on screen as accurate as possible.
- Unfortunately, we cannot guarantee an exact color match of the on-screen color to the colors of the actual products and the color appearing on screen should not be relied on as being such.
- Colors on screen may vary depending on your screen settings and resolution.