【Durable Aluminum Construction】Made from high grade aluminum, this welding head heat resistance and long time durability, maintaining structural integrity even under continuous industrial use 【Ergonomic & Efficient】Designed for comfortable handling and easy installation on hot melt machines, this welding head ensures stable while reducing operators fatigue during extended welding projects 【Multiple Size Options】Available in three standard sizes ( # 20, # 25, # 32) to matching common pipe dimensions ( 20mm, 25mm, 32mm), making it versatile for plumbing, construction, and repair applications 【Anti Blocking Design】The hot melt machine welding head features an innovative anti blocking design that prevents liquid clogging at the outlet, ensuring smooth operations during pipe welding projects with efficiency and reduced downtime 【Adjustable Mold Head】This welding tool includes a mold head and base with adjustable spacing to fit various pipe sizes, providing control for optimal welding on different pipe diameters from 20mm to 32mm, Manufacturer: ZBIianxer