✅ SILGRANIT is made of quartz sand, the hardest element of natural granite making it long lasting and durable ✅ Easy-to-clean low maintenance material has a non-porous, smooth stone surface ✅ Effortlessly remove scuff marks from utensils and stains from food and drinks ✅ Versatile dual mount design for drop-in or undermount installation ✅ Pre-drilled for single hole faucet with the possibility of 6 additional knock-out holes for accessories Overall: 33-1/2-Inch x 22-Inch Self Rimming or under mount installation Silgranit Bowl: 30-1/2-inch x 16-1/2-inch x 9-1/2-inch Resistant to scratches, stains, and all household acids and alkali solutions