threaded knob / star / stainless steel
The locking knob is manufactured by Martin. It is designed with a female or male stainless steel knob along with lobes and/or millings. It features different dimension which are 40 up to 65 mm, 14 to 20 mm, or 25 to 40 mm. Other dimension ranges available are 12.5 to 20 mm and 18 to 25 mm.