Our reamer drill bit can effectively process steel, metal, aluminum alloy, brass, copper, iron, nickel, plastic and PVC pipes, etc. It is an ideal tool for woodworking and metalworking projects such as bridge construction, steel structure installation, car truck trailers maintenance This bridge construction reamer is used to align, enlarge or smooth pre-drilled holes to 4 sizes of 5/8inch, 3/4inch, 1/2inch, 3/8inch, and install precisely before installing bolts or rivets. Designed to seamless and professional performance on your project Our taper chucking reamer is made of high quality high speed steel. It has 5 long threaded right-hand spiral flutes with precision ground edges, enabling it to smoothly cut through materials and effectively remove debris, ensuring enduring and performance This reamer has a rounded three-sided shank, a tapered tip, and a safety stop feature, ensuring secure chuck grip, allowing smooth reaming of imperfect holes and easy stopping of drilling when the hole is complete Always wear proper safety gear. Securely mount the reamer drill bit in the chuck of a portable electric or pneumatic tool. Position the drill bit in the pre-drilled hole, gradually increase speed, maintain pressure, keep the tool steady, and add cutting oil. Reduce speed to near the desired hole size for a smooth This bridge construction reamer drill bit features 5 spiral flutes and has professional performance. It is designed to align, enlarge or smooth pre-drilled holes to 1/2inch, 5/8inch, 3/8inch or 3/4inch. It is made of high speed steel material and has enduring performance. Enduring: This reamer drill bit is enduring and has professional performance. It can smoothly cut through materials and effectively remove debris. Seamless Working: This product can secure chuck grip and provides seamless working on yourproject. It is suitable for brass, copper, iron, nickel, and more. Product Name: Bridge Construction Reamer Drill Bit Size: 1/2inch: 113+37mm 5/8inch: 122+37mm 3/4inch: 137+37mm 3/8inch: 78+37mm Colour:As Shown Material:steel Package Contents: 4 x reamer Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.