Graham-Field RJ4300-MBK Brake Assembly Rollator Review ChangeLemon Medical Supplies and Equipment October 15, 2018Graham Field, Health & Household, Mobility & Daily Living Aids, Mobility Aids & Equipment, Rollators & Accessories, Walkers 0 Comment Product Description BRAKE ASSEMBLY ROLLATOR RJ4300. Manufacturer Contact Information 1-678-291-3207 Additional Products Invacare Absolute Wheelchair Cushion 16 in Wide X ... Geri Chair Gel Overlay Review Walker, Rollator Organizer Bag For Hands Free Stor... Sammons Preston Solid Seat Inserts 22″W x 18...