Spartan Phone Holder. Designed to work with the optics adapter, Mr G Clamp and Pro Clamp, the Spartan Phone Holder will enable you to clamp your phone to almost anything including the Davros and Sentinel. The phone holder uses a 1/4 thread and a 3/8 UNC.

*The Davros and optics adapters are not included in this product and will need to be purchased separately*