LH0604 Vossloh 109856 G4, G5.3, G6.35 bipin halogen lamp holder with mica front and 12 leads
Bw 920 Storz Endoscopy Surgery Shadowless Lamp Holder G6.35 Gy6.35 Gz6.35 Halogen Bulb Base - Lamp Bases - AliExpress
OMTO MR16 GU5.3 GY6.35 Lamp Socket, Common to Miniature Bi-Pin Base G4 G6.35 GX5.3 GZ4 MR11, LED Halogen Incandescent Led Socket Ceramic Body Lamp Holder (12-Pack) (12-Pack) - Amazon.com
LH0380 Vossloh 109547 G4, G5.3, G6.35 halogen lamp holder with two hole mounting no leads