IT MADE BY GLASS, CAN BU PUT ON A ANTI-FIRE RUBBER, FOR PRAY. THESE ITEMS ARE MADE BY GLASS, USE FOR OILL GLASS, CAN BE PUT ON AN FIRE-PROFF RUBBER, FOR PEOPLE TO PRAY, There are many size: also can be make according to customer own design,. If interested, please feel free to contact Danica Yeung, Jianhu Orient Imp. & Exp. Ltd. Tel:0086 515 86938143, Fax:0086 515 86390038