This part fits these tools:
DW050K-2 Type 1 9.6V IMPACT DRIVER
DW051K-2 Type 1 12V IMPACT WRENCH
DW052K-2 Type 1 12V IMPACT DRIVER
DW053K-2 Type 1 12V 1/2 IMPACT WRENCH
DW054K-2 Type 1 14.4V IMPACT DRIVER
DW055K-2 Type 1 14.4V IMPACT WRENCH
DW056K-2 Type 1 18V IMPACT DRIVER
DW056KS Type 1 18V IMPACT DRIVER
DW057K-2 Type 1 18V IMPACT WRENCH