Opteci-DSI 3.5x24tpi male thread adapter to male 3"x24Ttpi thread standard

Specifications

• Outside Diameter: 3.82" (97.0mm)
• Overall Height: 0.70" (17.8mm)
• Clear Aperture: 2.73" (69.3mm)
• Back-focus Usage: 0.15" (3.8mm)
• Drawing