TWO - 750lbs SUSPENSION SHOCK UNITS FOR DUAL (FULL) SUSPENSION BIKES OR PROJECTS LIKE TRAILERS GO KARTS TROLLEYS ETC LENGTH OF THE UNIT IS 150mm (UNCOMPRESSED) THIS IS MEASURED FROM CENTRE BOLT TO CENTRE BOLT  CHROME FINISH BUSH SIZE 24mm HEADS, FOR m8 BOLTS SPRING POUNDAGE 750lbs LENGTH OF SPRING 85mm, EXTERNAL DIAMETER 44mm, 28mm INTERNAL WE ALSO SELL THESE IN SINGLE OR FOUR UNITS . PLEASE SEE OUR OTHER LISTINGS OR CONTACT