LBTEK adjustable-height post has an outer diameter of Ø38 mm, with M6 threaded holes at the top. After attaching the support base, the OP1C height can be adjusted between 108 mm and 148 mm, and the OP2C height can be adjusted between 70 mm and 103 mm. After removing the support base, the OP1C height can be adjusted between 106 mm and 142 mm, and the OP2C height can be adjusted between 63.9 mm and 96.9 mm, and can be locked using a knurled locking nut. Both the post and the locking nut have wrench holes, which can be tightened or loosened with a 5mm hex wrench or ball-end screwdriver. The bottom of the post has a base, which can be secured to breadboards or optical tables using fork clamps.