The Fulterer FR 5328, Super Heavy Duty Two-Way Travel Drawer Slide. Have a load rating up to 880 lbs. and have stainless steel ball bearings. This is a non-detachable slide. These slides are greared for industrial applications, material handling and storage, packaging, areospace, automation, battery storage, or other heavy duty specailty needs. Interchangeable with ROLLON ASN28
or TUMA UD728.