• Aluminum, Spring-Loaded, Hex-Locking Thumbscrews (3/16") for Positioning Ease
• Three High Strength Magnets in Base Provide Holding Force Prior to Fastening
• Extra Wide Relief Cut Provides a Two-Line Stable Contact for Post
• Post can Pass Through Base Allowing Minimal Beam Height
• Unpackaged Weight: 123 g

This 4.19" long post holder is designed with a wide, square relief cut that provides two lines of contact for highly stable post mounting. A spring-loaded plunger within the aluminum thumbscrew holds a steel post firmly within the post holder prior to final tightening. This design allows one-handed positioning of post-mounted devices. The post holder is compatible with our entire line of table bases and base adapters. Thorlabs' imperial post holder is equipped with our 3/16" (TS25H) spring-loaded hex-locking thumbscrews.