Here's a liner by builder Sergey Spigel.
This tattoo machine is designed for outlines. Optimum machine perfomance is achieved with the 6.0-6.5 V voltage and 9 to 18 needles for contours. 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: Liner (9-18 Rl)
Duty: 130-146 Hz/61-62%
Frame Material: Steel
Machine Connection: Clip Cord Connection
Voltage adjustment: 6.0-6.5 V
Weight: 7 oz