Product Detail Additional Features - Seat is connected with 8 rivets to prevent warping Base Style - Four legs with footring Base/Frame Color/Finish - Gray Base/Frame Material - Heavy-duty, 18-gauge steel frame Casters/Glides/Wheels - Floor glides . The "Lab Stool - 18 Stool with Hardboard Seat - National Public Seating - 6218" is best product for you. We recommended Lab Stool - 18 Stool with Hardboard Seat - National Public Seating - 6218