Size in 1-3mm size difference is in normal range due to manual measurement.Type: Core Drill BitApplication: Wood drilling3 Modes Drill Bits Connecting Rod:Square Handle+Round Handle+Hex ShankDifferent models and sizes to meet your all needs and can be used for different types of electric drills.Grooved -slip design for long hours of work, making work feels comfortable.You can easily to spilt large firewood, wood at home, make it a easy work, save energy and time.The product is integrally without splicing and is more sturdy that is more comfortable to use.High Quality Material - Made of high quality high carbon steel,it's exceptionally strong, impact .No easy to due to vibration.Material: high carbon steelThis drill is suitable for a wide range of use, whether it is family, camping or farm, can be easily used.Simply install the drill bit into the hammer drill and then drill the wood and the wood will be easily cut out.Efficient Work to Save Time- Efficient tools for logging and open the wood for quick separation of logs and increased productivity.Titanium coating to reduce friction and heat by heat treatment,makes cutting easier and more durable.Size:45mmHardening treatment, high hardness precision, wear resistance, durable to use.3x Handle( Handle+Round Handle+Hex Shank )Design and Easy to Use:- Geometry reduces friction and saves time.Just install the drill bit into the power drill.( Fit most magnetic drills)ADVANTAGE - Split tough , hickory, walnut, sycamore;Not recommended for or large diameter hardwoods.1x Wood Splitter Drill(45mm)Color may have a little difference due to lights, screens, etc.Used for: Hammer Drill