Soft Charcoal Block 3-1/2" x 2-1/4"

This small sized, 3-1/2"L x 2-1/4"W x 1-1/4" thick, charcoal block is made from select, close-grained, knot-free wood. Using a charcoal block when soldering creates a reducing atmosphere which reflects heat back onto workpiece for the most effective soldering conditions.  Soft enough to allow work to be pinned or pressed into its surface. Wrapping binding wire around the perimeter of the blocks will help them last longer.  Made in USA