Combination wrench has two different ends for gripping a nut or bolt: a closed "box-end" for a secure, high-torque grip on hexagonal or square fasteners, and an "open-end" which is a U-shaped opening that allows for quick positioning and loosening of fasteners, especially in tight spaces. Its purpose is to offer the versatility of having two common wrench types in a single tool, making it a go-to for a wide range of general mechanical, automotive, and household repairs.