Cup's diameter: 8mm*20mm
Plunger stroke: 10mm
Holding thread: external M10
We sale the cups on Ebay,This is the link,http://www.ebay.com/itm/331996523915?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649 .If you buy more,I can give you a discount.
*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.