M8 8mm MALE TO M6 6mm Female Threaded Reducers (Four) – Mnpctech
FURY M8 to M6 adaptor – for single brush - Cougartron
1/5pcs Male To Male M3 To M4 To M6 To M8-20 304 A2 Stainless Steel Thread Adapter Outside Thread Double Head Transfer Screw Bolt - Buy Stainless Steel Thread Adapter,Outside Thread Double