This resin-core solder reel is a 500g spool of 1.6mm diameter solder wire with a 40:60 tin-to-lead composition, ideal for general-purpose electrical and electronics soldering work. The integral resin flux core eliminates the need for separate flux application, reducing preparation time and improving joint quality on PCBs, panel work, and component assembly. Perfect for electricians, electronics technicians, and repair professionals working in the field or workshop.