Product Name: Double Decks Movement Model NO.: FS506 Product Description We offer double decks movement -- FS506 available with details as follows:Transmission ratio: 5.9Distance between centers: 13.8Distance between holes: 9Material: BrassLength of shaft extension: 21We are supply over 1, 000 different types of pressure gauge movement, and producing more than 50, 000, 000 pressure gauge movement yearly.We also accept your OEM orders or develop any new parts as per your drawing or samples.For more details please contact us.