Specification Brand : Zeromall BulletPoint1 : Made of high-quality aluminum alloy, this universal C-clamp is durable, strong, lightweight and easy to carry. BulletPoint2 : The rubber pad is made of environmentally friendly ABS material, which increases friction and can effectively prevent falling off. BulletPoint3 : Comes with multiple bracket installation holes, and the installation angle can be adjusted freely. BulletPoint4 : 1/4"-20 thread holes and 3/8"-16 thread hole,C-clamp jaws expand from 0.8 inch -1.6 inch / 20 mm to 40.6 mm wide. BulletPoint5 : It can be adjusted by the knob, which is easy to operate. BulletPoint6 : Steel sliding T-Bar for use in tight spaces BulletPoint7 : Available in 9 sizes that range from 2-1/2 In. to 14 inches Color : Black CustomerPackageType : Standard Packaging ExternallyAssignedProductIdentifier1 : 633183486899 ExternallyAssignedProductIdentifier2 : 0633183486899 ExternallyAssignedProductIdentifier3 : 00788502200622 IncludedComponents : C-Clamp ItemName : Zeromall Universal C-Clamp Aluminum Support Clamp Desktop Mount Holder Stand with 1/4" and 3/8" Thread Black(4 Pack) ItemPackageDimensions_Height : 16.8 centimeters ItemPackageDimensions_Length : 6.1 centimeters ItemPackageDimensions_Width : 11.4 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : c-clamps Manufacturer : Zeromall Material : ductile alloy casting & steel Material1 : Acrylonitrile Butadiene Styrene Material2 : Aluminum ModelName : 540-14 ModelNumber : 540-14 NumberOfItems : 4 PackageLevel : unit PartNumber : 540-14 ProductDescription : C-clamp jaws expand from 0.8 inch -1.6 inch / 20 mm to 40.6 mm wide. Material: Aluminum Thread Hole: 1/4 inches & 3/8 inches