New oregon 14"  53 x drive links x 3/8 low pro 050 replacement chain.
FITS MODELS LISTED.

CS30, CS35

DN400, DN401, DN402

DN404, DN404B, DN412

DN416, GK30, GK35, GK129

GK300, GK303, GK310, GK320

GK321, GK322, GK330, GK425

GK430, GK435, GK440, GK535

GK540, GK1430, GK1435, GK1435T

GK1440, GK1630, GK1630T, GK1630TK

GK1630XC, GK1635, GK1635T, GK1635TO

GK1635TX, GK1635X, GK1735, GK1735T

GK1640, GK1640T, GK1935              

 Professional semi chisel chain. 
To work out your size remove chain & count the little links which fit into the guide bar! SEE PIC TWO
Any questions don't hesitate to contact me over size! & models etc.
And don't forget to check my other sales &auctions.