... of professional high quality drill chuck for different applications.-Key-type drill chuck: light duty with threaded mounted:10mm, 13mm, 16mm-Key-type drill chuck light duty with taper ... &Heavy duty key-type chuck: 10mm, 13mm, 16mm, 20mm-Key-type drill chuck with anti-dust function: 13mm, 16mm-Keyless chuck with double sleeves: 6mm, 10mm, 13mm-Keyless chuck with ...