ITEM NAME:7inch Aluminum Speed Square Triangle Angle Protractor Measuring Tool A#S Product Description Description: Features: 1. Cast aluminum made, integral forming process, strong and durable 2. Stamping scale, durable and wear resistant 3. Light and convenient and durable Use: multi-functional engineering supplies Specifications: Material: cast aluminium Product size: about 18x18x2cm/7.09x7.09x0.79'' Product weight: 130g Included: 1 x Triangle Protractor.Included: 1 x Triangle Protractor. Material: cast aluminium. Cast aluminum made, integral forming process, strong and durable. If item is defective after 3 months, you can still send it back to us. We will send you a new one after receiving the defective item.