FF600 Slide-N-Click Wheelchair Retractor Kit with Combination Retractable Occupant Restraint, Buckle Tab A proven, convenient system to secure wheelchair passengers. The FF600 Retractor Series System, which includes the FF661-4C-SNC, is the most convenient and proven wheelchair securement system you can buy today. The FF661-4C-SNC wheelchair securement kit includes 4 retractors for the series L-track. The ergonomically designed handle is quick and easy to grasp, the dual, 24-teeth sprocket mechanism enables the user to increase tension on the webbing, and the track fittings are specifically designed to ensure free pivoting action for optimum belt alignment. Kit Includes: Qty 2 FF600 Series Right-Hand Wheelchair Retractors with SNC Fitting and Buckle/Tab (FE200944-SNC) Qty 2 FF600 Series Left-Hand Wheelchair Retractors with SNC Fitting and Buckle/Tab (FE200945-SNC) Qty 4 Slide ?N Click Floor Anchor Kit (Q8-7580-A) Bottom Assembly 3/8? (9.5mm) Bolt 2.5? (63.5mm) in length Washer, Hex Nut and Blue Plug FF600 Series Retractor Brochure FF600 retractors, when properly used with a complete Sure-Lok System (comprised of wheelchair tie-down, a complete occupant restraint system, including lap and shoulder belt), track and anchorages are designed to meet the following requirements where applicable: 30mph/20g Impact Test Criteria per SAE J2249 30mph/20g Impact Test Criteria per Canadian Z605 Standard 30mph/20g Impact Test Criteria per National Standards for School Buses 49 CFR Part 38 Americans with Disabilities Act (ADA) 49 CFR Part 571.222 (FMVSS 222) School Bus Passenger Seating and Crash Protection SKU: FF661-4C-SNC