Whitelotous 90 Degree Right Angle Clamp 100mm Mitre Clamps Corner Clamp Picture Holder Aluminum alloy construction with steel screws. Holds joints at a 90 degree angle. Can also be used for 45 degree sawing. Pre drilling mounting holes to allow fixing to work surfaces. Maximum clamping range 7.5CM, generally 4 right-angle clamp all together to use.