Backrest for Drive Medical Nitro, Nitro Hemi, & Nitro Tall Rollators (1026604-B) Merits Pioneer 5 DLX (S541) These black plastic discs are

These black plastic discs are alternately referred to as caster caps

They are built strong and can withstand repeated deep cyclic applications

This is a model DS72K01 Rhino scooter controller/power module manufactured by Dynamic Controls

With plenty of comfortable padding

This charger is compatible with all Quickie power chairs

Backrest for Drive Medical Nitro, Nitro Hemi, & Nitro Tall Rollators (1026604-B) Merits Pioneer 5 DLX (S541) These black plastic discs areThe backrest is what allows the Drive Medical Nitro Nitro Hemi, and Nitro Tall rollators to do double duty as a handy and convenient rolling sit down stool. Unlike the rigid metal backrests used on other rollator models, this soft fabric version is a perfect blend of comfort and function. Drive Medical: 1026604 B