WB-04-2P050 WB-04-3PXXX WB-04-4PXXX WB-04-5PXXX  Plastic spacer : FOR 63mm( 50mm ) FOR 89mm ( 73/77/79mm )FOR 100mm( 89mm ) FOR 127mm ( 102/112/115mm ) D= 50mm 73mm 77mm 79mm 89mm 102mm 112mm 115mm