Alumina Ceramic Heat Resistant Soldering Plate with Holes - 4" x 4" Improve soldering results with this ceramic work surface 4" x 4" x 3/4" high heat-resistant (2200F) alumina ceramic plate doesn't burn or bond with solder Provides flat, even platform for superior connection points; 30% aluminum oxide 952 holes allow quicker cooling & prevent solder build-up Great for electronics repair, jewelry making, wiring projects