Never used, though bit grubby. Mc Alpine so good quality.
One is 235 mm
Other is 305 mm
See links below.
https://www.screwfix.com/p/mcalpine-macfit-rigid-90-angled-wc-short-pan-con...
https://www.screwfix.com/p/mcalpine-macfit-rigid-90-angled-wc-long-pan-conn...