T-SM9RR - M9.5 x 0.5 Retaining Ring for Ø9 mm Lens Mounts fiber-count_16 or a vented center mount

or a vented center mount shelf capable of supporting 50 lbs

They have low toxicity whether by oral

Fitel S326 Cleaver

AFL FuseConnect SC Connector for 50µm Multimode Fiber

T-SM9RR - M9.5 x 0.5 Retaining Ring for Ø9 mm Lens Mounts fiber-count_16 or a vented center mountT SM9RR M9. 5 x 0. 5 Retaining Ring for 9 mm Lens Mounts Product Drawing Thread M9. 5 x 0. 5 Thickness M9. 5 x 0. 5 Clear Aperture 0. 31"(7. 9 mm) Internal Thread External Thread Min Major Diameter 9. 500 mm Max Major Diameter 9. 479 mm Min Pitch Diameter 9. 175 mm Min Major Diameter 9. 371 mm Max Pitch Diameter 9. 288 mm Max Pitch Diameter 9. 155 mm Min Minor Diameter (and 83. 3% of Thread) 8. 959 mm Min Pitch Diameter 9. 069 mm Max Minor Diameter