ITEM NAME:DIY For 936 Soldering Iron Station Controller 907 Iron A1321 Heating Core New L a.imagelink a:hover.imagelink {color:#32251F;.HAKKO 907 compatible Iron Handle. A1321 Heating core. Temperature range 200 ~ 480 deg C ( 392 ~896 deg F). Size of Green Board: L 10cm x W 7.3cm (approx). Size of Black Board: L 10.8cm x W 7.5cm (approx).