Cast-iron die heads with 4 alloy steel chasers per head for clean, accurate thread cutting. Each die head has 4 swarf removal holes. 2-piece tubular steel handle and compact ratchet head. For threading black gas or galvanised iron pipes. Suitable lubrication is required when cutting. Includes 4 die heads: 1/2″, 3/4″, 1″ and 1-1/4″ BSPT (13, 19, 25 and 32mm).