(pack of 5) THORLABS Optical Post SS 8-32 Setscrew 1/4"-20 Tap L = 1.5 in USA

ThorLabs TR3 Ø1/2 Inch Optical Post

ThorLabs TR4 Ø1/2 Inch Optical Post

Thorlabs SM2M30 Lens Tube Without External Threads - US PURCHASE ONLY

Eljen EJ-550 Silicone Optical Grease Photomultiplier Tube Mounting

ThorLabs TR6 Ø1/2 Inch Optical Post

Thorlabs TIA60 - PMT Transimpedance Amplifier for Photomultiplier Tubes - 60 MHz

Newport MRL-1.5 Miniature Optical Rail