1. adjustable hole saw size: 0-14mm. 2. material: durable hard steel and aluminum alloy. 3. Non-slip designed handle and optimally shaped drill bit for comfortable grip and easy operation. 4. excellent hand tool which is also ideal for electricians, plumbers and heating engineers, carpenters etc. 5. uses high strength alloy steel material to reduce wear and distortion. Quantity Shipped: 1 piece Product color: black Product specifications: Aperture 14mm Universal hole opener model, which can be used for hole opening and reaming. Long handle design, more stable grip! Can only be used for all types of plastic, fiberglass, too hard materials may damage the cutter head The cutter head is very sharp, please make pay attention to safety when using it. Note: Due to different factory production batches, the length of the tap will have a deviation of about +-3mm, which will not affect the normal use. If it bothers you, shoot carefully!