Ceramic soldering boards are an Perfect to do all types of soldering and annealing on. Ceramic is a really good material for distributing heat, as the both reflects and absorbs heat. Ceramic Honey Combs are great for beginners, because they're so versatile, and also quite . They're also easy to clean and resurface with sandpaper. Charcoal block, Magnesium and Firebrick are not Perfect for beginners.Nice for use , working places, office as you wish each piece in the soldering kit for jewelry comes in the Perfect size for effective use; The honeycomb ceramic soldering block measures 5.28 x 3.66 x 0.51 inches, an optimal size providing adequate working ; Both the copper tong and reverse tweezers, at about 8.27 inches and 6.3 inches respectively, Perfect for easy handling Colour:White & Silver Material:Metal Size:soldering block about:13.4x9.3x1.3cm Package Contents: 2 * ceramic soldering boards 1 * copper tong 3 * reverse tweezers(1 straight soldering tweezer, and 2 tweezers with different angles) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.