Features: 1. The self-tapping tip makes the fastener especially in the pocket hole. brand new and high quality 2. Made of carbon steel, high hardness 500-550hrc, high hardness, stable and durable. 3. The screws are for sharp, easy to drill into wood and plastic. 4. The pocket hole screws are galvanized and treated with rusbert technology to provide rust for protection. 5. Can be used for wood. 6. 150 screws for the pocket hole clamp in the bag. Specifications: Material: Carbon Steel Style: 32mm/1.25inch Style: 25mm/0.98inch Style: 38mm/1.49inch Style: 50mm/1.96inch Style: 63mm/2.48inch Package Includes: 50/100/150xPocket Hole Screws note: 1.Please allow 1-2mm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.