This is a set consisting of an extension arm for attaching strobes, etc., to a camera during underwater photography, and a grip base. A lens holder is also included, but it can be slightly difficult to hold as it hits the back of the hand. You can remove it if you don't need it. It has a moderate amount of use, but there are no major scratches. Specifically, the set includes the following: 【Product Overview】 ① INON Grip Base D4: This is the grip part that attaches to the camera (housing). It can be directly attached to over 100 models of waterproof housings. Adjustment is made with a main plate that slides back and forth and two sub-plates. ※ It could be attached to the WP-DC55 without the plates. ※※ Please check the compatibility chart in the last two photos to see if it is compatible with your housing. ② INON Carbon Telescopic Arm S Body: This is a two-stage sliding telescopic arm that allows for stepless length adjustment. The front and rear joints can be adjusted three-dimensionally, up, down, left, and right. ※ You might want to extend it, but if you extend it too much, it becomes difficult to handle underwater. I'm glad I chose the shorter one. ③ INON LD Lens Holder DP-S: This is the lens holder part for holding lenses that are not in use. Compatible with INON 28LD series / LD series attachment lenses. ④ INON D Holder Extension Bar: This is a part for attaching ② and ③ to ①. ⑤ INON Z Adapter: This is a part for attaching a strobe to the arm. Compatible with INON strobes, but please contact the manufacturer for other brands. ⑥ INON Clamp, Direct Base: These are the joint parts. ※ When shipping, it would be very difficult to assemble if it were disassembled. I will deliberately send it assembled, so please take photos of how each part is connected with your smartphone, etc. Disassemble it after you have it in a state where you can refer to it sufficiently, and practice reassembling it. The instruction manual is also included, but it is very difficult to understand. #Diving #UnderwaterPhotography #ArmSet #DivingEquipment