THESE CAGES HOLD 98 cm2 (50mm high x 50mm diameter) VOLUME AS OPPOSED TO 61 cm2 (44mm high x 42mm diameter) VOLUME ON MY STANDARD SIZE CAGE FEEDER LISTINGS ALSO CUSTOM SIZES CAN BE CATERED FOR. 10 off 3oz Handmade Heavy Quality plastic coated cage/swim feeders River Trent New Bargain with shrink wrapped elastic boom which helps bouncing out of snags ....... Please see my other listings for cage feeders , addon leads and various other leads ranging from 3/4 oz to 6 oz including heavy trent cage/swim feeders Thanks