SKIL SHD77-73 7-1/4-Inch Worm Drive Circular Saw, Twist Lock Powerful 15 amp motor and durable worm drive gears for pro performance and long life "Impact Resistant" Carbide Blade for optimal use Anti-Snag Lower Guard Reduces Snags When Making Narrow Cut-Offs 22 amp switch and heavy gauge cord Die-cast aluminum motor and gear housings for durability