1、These pipe threading heads are made of high quality alloy steel, which is durable and wear‑resistance for long time use. 2、Each die head has four swarf removal holes. 3、A long handle offers max torsion while threading to meet your basic needs in work. 4、All parts are neatly packed in a storage case, convenient to carry and store. 5、Apply to the threading work of galvanized pipe and iron pipe. 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