Quartz Button Centres To suit Hermle, Seiko and Takane with " Euro Shaft" designs. Button Centres for movements not requiring a sweep hand. Press Fit Button Centre used to cover the Centre Shaft on Quartz Movements. Also suited for designers wanting to attatch a light weight indicator for marketing purposes. Retro design to suit many old styled clocks or new modern creations. Centre is: 9 mm Diameter Color: Black Weight: less than 5 Grams Material: Aluminium / Steel / Tin "Euro Shaft" Design Hour hand hole is 5mm dia Minute hand hole is slotted 4mm dia slotted is 3mm.