PacTool International RS501 Roof Snake, Shingle Nail Puller, Roof Shingle Installer YOUR BEST FRIEND FOR ROOF SHINGLE REPLACEMENT! The Roof Snake makes replacing composition shingles safer, easier and more accurate than traditional methods PATENTED OFFSET NAIL-SLOT FEATURE Unique design helps you align roofing nails with the proper one-inch offset from the bottom edge of your the existing course DAMAGE-FREE SHINGLES - Replace and install 3-tab shingles without over-bending or striking surrounding shingles (or fingers!) with your hammer CLAW TIP  Shingle nail puller claw removes nails easily from roof shingles. Drive the claw end under the nail and roll the nail out by twisting the Roof Snake ESSENTIAL TOOL FOR ROOFERS  the Roof Snake takes the bite out of replacing shingles to start and finish the job the right way