Drum Dolly for Bulk MIG Wire Category_Prisms These contact tips are made Cup Size:#7 Cup These contact tips are made from Chrome Zirconium (CuCrZr) at their core which is 50% harder than standard Electrolytic Copper (E Cu) making it significantly more resistant to mechanical wear the 150mm Universal Stop gives you 50mm of continuous travel (0–50mm range) to fine tune material placement off the table grid Use this simple welded trolley to quickly and easily roll barrels of MIG wire around your work cell The use of drum carts allows operators to quickly change from an empty barrel of wire to a full barrel of wire without calling for material handlers