Amtech 13mm (1/2") Keyless chuck with SDS adapter

EASY TO FIT: This 13mm (1/2") keyless chuck has a 13mm (1/2?) x 20 UNF with an SDS adapter and is very easy to fit.

• Thread: 1/2?(13mm) x 20 UNF
• Easy to fit and no key to lose
• Complete with SDS adaptor