ITEM NAME:8Pcs Woodworking Spacing Ring +Hex Wrench+Right Angle Miter Corner Clamp Description: (Black) Drill limited ring, clamping device, positioner, works with both standard and brad-point bits Setscrew type collar will not damage bits, positively locks anywhere along the bit, hardened and tampered (Red) Corner Clamp, 90Â °degree right angle picture frame corner clamp holder woodworking hand tool Alloy thick thread, withstand higher intensity force Diagonal connection and reinforcement reinforcement, connecting more weight, withstand greater gravity Specification: (Black) Shaft Chuck+Hex Wrench: Material: High Carbon Steel Size: Approx. 3, 4, 5, 6, 8, 10, 12, 16 mm/ 0.12, 0.16, 0.20, 0.24, 0.31, 0.39, 0.47, 0.63 inch (Red) Corner Clamp: Material: Aluminium Alloy Color: Red and Silver Maximum clip 7.5 cm, while generally used for a group of four High hardness, will not rust, suitable for the production of reinforced frame, tank production, etc. Forming a high-quality screw fixation, even slippery silk off, but also to re-install, hammering reinforcement fixed Size: Approx. 175 x90 mm/ 6.88 x3.54 inch Package Includes: 8 Pieces of Drill Bit Depth Stop Collar 1 Piece of Hex Wrench 1 Piece of Corner Clamp.(Black) Shaft Chuck+Hex Wrench 1 Piece of Hex Wrench. (Red) Corner Clamp 1 Piece of Corner Clamp. Alloy thick thread, withstand higher intensity force. Maximum clip 7.5 cm, while generally used for a group of four.