Breadboard Optical Table Mounting Clamp M6 Aperture

4Pcs Die-Cast Aluminum Pivot Joint with M6 Screws, Aperture 6mm, Silver Tone

2Pcs Die-Cast Aluminum Pivot Joint with M6 Screws, Aperture 6mm, Silver Tone

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2Pcs Die-Cast Aluminum Pivot Joint with M6 Screws, Aperture 6mm, Black

2Pcs Die-Cast Aluminum Pivot Joint with M6 Screws, Aperture 6mm, Silver Tone

Unbranded 1-1/2" Optical Shaft Locking Sleeve Screw Shaft Collar Steel Clamp 2PC

4Pcs Die-Cast Aluminum Pivot Joint with M6 Screws, Aperture 6mm, Black