2 1/4" od x 10swg = 57.15mm od x 3.2mm wall x 50.75mm id. 2 1/2" od x 10swg = 63.5mm od x 3.2mm wall x 57.1mm id. 2 3/4" od x 10swg = 69.85mm od x 3.2mm wall x 63.45mm id. 2 1/4" od x 16swg = 57.15mm od x 1.6mm wall x 53.95mm id.
eBay