Total Length (incl. blue seal): 87.2mmSpindle Length (from top of circlip to end): 48mmSpindle Diameter: 9mmSpindle teeth head Diameter: 7.8mmBarrel Diameter: 23.8mmLower Thread: 26mmUpper Thread (closer to spline): 23.8mmThis is a long stem replacement flow cartridge for Hudson Reed triple shower valves. If the shower valve has a thermostatic cartridge there will usually be two of this ceramic disk cartridges installed on either side of the cartridge, therefore if you need both you'll need to buy two as the cartridges are sold individually.This cartridge is a 3/4" (inch) quarter turn on / off, with ceramic discs which turn anti clockwise. (Cold Side - Clockwise Close)This CD valve cartridge has a threaded collar.Products from ChunChuan's store