Bottom Assembly 3/8? (9.5mm) Bolt 2.5? (63.5mm) in length Washer, Hex Nut and Blue Plug Omni Brochure Omni L Track Instructions Now you can ?mix match? retractors and manual belts from Q?STRAINT SURE-LOK whenever you see the OMNI APPROVED Badge . Omni Approved WheelchairStrap.com Designed for agencies that require total flexibility in a mixed-brand environment, the OMNI line takes the guesswork out of securing your passengers. All OMNI Floor Anchor Systems feature stainless steel or aluminum materials designed for demanding transportation environments. It has always been recommended that tie-downs match with the brand of their floor anchorages. Now with the OMNI series, you can reduce your liability and know that your products are tested and certified for both Q?Straint and Sure-Lok systems.