This item is a Jadever 75mm (3-inch) Corner Clamp.
Purpose: Designed to securely hold workpieces at a precise 90-degree angle for woodworking and picture framing.
Material: Constructed from a durable aluminum alloy body.
Capacity: Has a maximum clamping width of 75mm.
Features: Includes an ergonomic handle for quick tightening and release, and mounting holes for fixing to a work surface.