Per Bosch batteria agli ioni di litio 18 V per Worx 4 PIN 20 V adattatore trapano convertitore
The Adapter is suitable for Worx 20V 4-PIN OLD STYLE battery interface type tools, can not be for 6-PIN. The top of battery adapter is for Worx Powershare 4-PIN battery cordless power tool：WA3551.1 WA3530 WA3553.