3 Drill Sizes: Our dowel jig kit includes 3 standard sizes: 1/4', 5/16', and 3/8'. It combines drilling and marking functions for precise hole placement and accurate line marking, ensuring ideal alignment for cutting and joining tasks Easy to Use: The doweling jig features adjustable legs for secure clamping on various wood types. It allows quick repositioning for continuous drilling, significantly improving work efficiency Durable Aluminum Alloy with Laser Markings: Our drill jig for straight holes is built from high-strength aluminum alloy for long-term durability. It features clear, wear-proof laser-etched scales for accurate alignment, even after repeated use Versatile Applications: This doweling jig kit is suitable for a variety of wood shapes, including boards, square timber, and cylindrical pieces