Decked Cargo Glide system. Currently in my 22 F150 with a 5.5' bed. But fits in any bed of that size. Near new condition. Has integrated tie down points for your gear. 1,500 lb capacity. Mounts using Plus Nuts which you will have to buy at Harbor Freight. It's a super nice drawer system for mounting tools or camping gear when Overlanding. Makes it easy to access gear at the front of your bed, especially if you have a truck bed cover.
I am going a different direction and won't use it.
Email me through Craigslist with your contact info and I will call you back.
Here is a link to what it is. Mine is the gen before this one but just as solid.
https://decked.com/products/cargoglide-for-truck-bed?campaign_id=414125541&adgroup_id=1271037105539642&ad_id=&placement=&bc_source=google&bc_campaign=414125541&bc_adid=&msclkid=58208a6ca15f1bd4cb57e07d37b54514