Fiber cement is great for siding, but it can be insidious if it gets in your lungs! The Striker Carbide Utility Score is a safer tool for cutting the stuff—it sports a V-shaped carbide tip features a sharp v-shaped carbide scoring tip designed to scribe deep and wide cuts with minimal force into fiber cement siding, backer board, roofing, linoleum, laminates, plastics, and glass. Though it won’t replace gang cuts of siding with saws, contractors and installers can safely cut fiber cement indoors and in tight or remote areas.