Pipe Threading Kit 13, 19, 25 & 32mm OverviewFor threading black gas or galvanised iron pipes. Kit contains 4 die heads, 2-piece tubular steel handle and compact ratchet head. Cast-iron die heads with 4 alloy steel chasers per head for clean accurate thread cutting. Each die head has 4 swarf removal holes. Die sizes 13, 19, 25 and 32mm (1/2 inch, 3/4 inch, 1 inch and 1 1/4 inch BSP).