Features: These pipe threading heads are made of high quality alloy steel, which is durable and wear-resistance for long time use. Each die head has four swarf removal holes. A long handle offers max torsion while threading to meet your basic needs in work. All parts are neatly packed in a storage case, convenient to carry and store. Apply to the threading work of galvanized pipe and iron pipe. Specification: Material: Alloy steel Weight: Approx. 4000g/141.1oz Suite: 01 3-piece suit, 02 4-piece suit (Optional) 4-piece suit :(mm) 1/2" applicable pipe diameter range: 15-22mm 3/4" applicable pipe diameter range: 20~27mm 1" applicable pipe diameter range: 25~34mm 1-1/4" applicable pipe diameter range: 32~42mm Package List: 4 * Threading Die 1 * Ratchet head 2 * Handle