These are lots of about 1500 pieces of pre-cut silver solder chips for jewelry fabrication. USA Made and lead-free and cadmium-free; easy-density chips are 0.5mm mx 1mm x .25mm; melt 1240 degrees F, flow 1325 degrees; general soldering and repairs, intermediate or final operations for jewelry fabrication, teaching, jewelers, craftsmen; beginners should have adequate live instruction; grab a tweezer full of chips and set them down on your charcoal block; no more cutting; the chip sizes are excellent to work with and pretty consistent; one customer suggests you use paste flux for a good join; use a small paint brush dipped in the paste flux to pick up and place the solder pallions; this solder is for general soldering and repairs, intermediate or final operations. This is cadmium and lead free.