B&P Lamp Cast Iron Loader 2 Pound Weight, For Table Lamp Bases Counterweight 4 1/2 Inch Diameter - B&P Lamp Cast Iron Loader, 2 lb,, 4 1/2" diameter, Cast Iron Loader, 2 lb,, 4 1/2" diameter, 7/8" thick, Center hole slips 1/4 IP pipe. Features Include: Cast Iron Loader for Table Lamp Bases to add Weight and Stability to the Lamp, 2 lb Weight Helps Keep The Lamp From Tipping Over, 4 1/2" diameter with center hole to slip 1/8/IPS (~3/8 inch), Designed and Produced by B&P Lamp.