300mm handle
Ball Peen Hammer Basics: https://www.bobvila.com/articles/ball-peen-hammers/
Best Uses for a Ball Peen Hammer: https://www.doityourself.com/stry/5-best-uses-for-a-ball-peen-hammer
Different Types of Hammers: https://www.diydata.com/tool/hammer/hammers.php