Chuck, chuck 1 / 2-20 UNF, 2-13 mm / full metal drill from Bosch, Makita, Einhell uva (Misc.)
The chuck is designed for DIY perfectly okay. Good quality workmanship, lighter gear, adjusts my Makita and is regularly in use. As it is proved to length of time to wait, but you can buy three of these drill chucks, before you reach the price of an