Products Frames Big Ben® Frame BIG BEN® For Use with all 18” Rollers Spare Legs available (R085) Compatible with Sherlock GT® & Standard Threaded Extension Poles Products Frames Big Ben® Frame Cat. No.Core LengthCore SizeUPC 0-71497-Qty.Cat. No.BR045Core Length: 18Core Size: StandardUPC: 0-71497-13435-6Qty.: 10Cat. No.Core SizeUPC 0-71497-Qty.Cat. No.R085Core Size: StandardUPC: 0-71497-13587-2Qty.: 6