The Sea Arm 8 RDX Set with Tray / Grip from Sea & Sea is a package of components for mounting accessories such as lights to an underwater video housing. This arm set is designed for use with the RDX series DSLR or compact digital camera underwater housing systems. A tray and grip to mount to the housing are included. Made from corrosion-resistant aluminum, the components of this set also carry an anodized coating for enhanced protection against scratches, impact and the elements. This set consists of the following components (for 1 strobe): #SS-22118 Tray/Grip, #SS-22113 8" arm, 2x #SS-22116 Ball Clamp, #SS-22115 Strobe Head S, and #SS-22119 Fixed Arm Base. This arm set increases and enhances your options for underwater photography and videography.