Part number 4931379739 is a genuine Milwaukee / AEG Fixtec to SDS-Plus Bit Chuck Adapter. This replacement part is compatible across a wide spectrum of legacy and current corded/cordless power tools from both Milwaukee and AEG, including :
Milwaukee Rotary & Combi Hammers: PLH 32, PLH32XE, PLH 30, PLH30XE, PPH24X2E, PPH26XE, PPH30X2E, PLH30QEX
AEG Rotary Hammers: PN3500X, PN3000X, PN3000XN2, PN3000SUPX2, BH3600X