With a M6 threaded holes on the bottom , which can be easily fixed on various bases, optical tables and breadboards. All the post holder are equipped with a screw knob to fix the mounting post.
All support holders are equipped with a positioning spring steel ball and screw knob to fix the post firmly and steadily. From the top to the bottom of the square groove design, when the screw knob is fixed, this forms three coplanar points for stability.
Various lengths of post holder can be matched with different heights of post, allowing the required height in various applications.Can be used with small fork type rod seat pressing bar 523601
Internal diameter 12.7mm
5 different heights are available,height from 25.4mm~101.6mm