Made of copper, the set of tools, is durable to use. It has mini and compact size, which is easy to carry and operate. With the feature of lead-free, there are 5 different sizes replacement tips for soldering the different components of electronic products. Item Name: Soldering Iron Material: Copper Type: Lead-free Model: 900 Bright Light Series Style: I+B+K+IS+2.4D Maximum Power: 120W Input Voltage: 200V Temperature Range: 100-600 Degree Celsius Features: Head Length: 16mm/0.63" (Approx.) Width: 0.5-5mm/0.02" - 0.2" (Approx.) Total Length: 130mm/5.12" (Approx.) Single Size: 3.3cm x 0.5cm x 0.5cm/1.3" x 0.2" x 0.2" (Approx.) Notes: Due to the light and screen setting difference, the items color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 3 x 1 x I Model Welding Head 1 x B Model Welding Head 1 x K Model Welding Head 1 x IS Model Welding Head 1x 2.4D Model Welding Head