[Size]:Each beer opener measures approx. 4 x 8cm, which works well with most bottles, a proper size for you to use; Bore hole: 7 mm threaded post, easy to install. [Package Content]:The quantity and color of DIY bottle openers depend on your choice, which are sufficient for your daily use and replacement, handy accessories for your DIY and craft projects. [Long Lasting Quality]:This wood turning project kit is made of quality stainless steel, not easy to get tarnished, resistant to corrosion and rust, smooth to touch with no burr, safe to use without having to worry about hurting your hands, reliable for long period application. [Extensive Usage]:The stainless steel bottle opener makes it easier to open the beer bottle, which is labor saving and time saving; These blank bottle openers are suitable for beer, wine, soda and so on. [Easy to DIY]:These metal openers are easy to use when making DIY bottle openers, and you can install a wooden handle for it, add fun for DIY your bottle opener, making a useful accessory for kitchen or bar; Please note the handle cannot be drilled too tightly. Colour: black, bronze, silver, gold Product includes: 4pcs Notes: Please allow 1-3cm error, due to manual measurement, please make sure you don't mind before bidding. Due to the difference between different monitors, the picture may not reflect the actual colour of the item. Thank you for your support!