1、MULTIPLE HOLE SIZES: This drill guide block provides 6 standard hole diameter, 1/8 inch, 3/16 inch, 1/4 inch, 5/16 inch, 3/8 inch, and 1/2 inch, achieving accurate drilling and meeting various needs. 2、ALUMINUM ALLOY: The hole drill locator is made of aluminum alloy material, which has excellent durability and wear resistance, ensuring that it remains sturdy and does not deform under long term use. 3、ACCURATE DRILLING: This portable hole drill locator can help you quickly find the optimal hole drilling position and angle, reduce errors, effectively improve drilling efficiency and accuracy, for woodworking use. 4、CONVENIENT USE: With fine workmanship, this drill guide block has a simple structure and clear size markings, ensuring accurate and convenient drilling, improving woodworking skills and work efficiency. 5、PORTABLE AND PRACTICAL: The woodworking drill guide adopts a portable design, compact and lightweight, and can be easily carried whether it is for indoor fixed operations or outdoor temporary construction.