Here's a shader by builder Sergey Spigel.
This tattoo machine is designed for shading work. Optimum machine perfomance is achieved with the 6.5 V voltage and 7 to 11 magnums. It is also recommended to use soft grommets while using this machine.
Manufacturer: Spigel Tattoo
Product Type: Tattoo Machine
Machine Type: Coil Tattoo Machine
Purpose: Shader (7-11M)
Frame Material: Steel
Machine Connection: Clip Cord Connection
Voltage adjustment: 6.5 V
Duty: 100-111 Hz/49-50%
Weight: 7 oz