The Silent Partner aluminum thumb-adjustable swivel clamp clone history:

In May 2000 the Silent Partner's supplier (Xpider Co.) copied Eagnas PN-1008 aluminum swivel clamp design. Use the Eagnas PN-1008 aluminum top and bottom parts. Use the Eagnas PN-1008 steel post. Add the steel handle and metal thumbknob. (Click on model number to view larger image.)

1997 Eagnas PN-1008 Price:		May 2000 Silent Partner Swivel Clamp