Standard finder base on the top is compatible with the dovetail of guide scope and finder. | Male flash shoe on the bottom is compatible with the hotshoe or coldshoe on most cameras. | Knurled locking ring is easy to tighten directly by hand. | Rubber pad in the ring enhance the grip between adapter and flash shoe, and protect flash shoe from any damage due to mounting. | It reserved 1/4"-20 threaded hole in the bottom for mounting on a variety of brackets that with 1/4" screw.

【Flash Shoe】 Male flash shoe on the bottom is compatible with the hotshoe or coldshoe on most cameras. (Note: it can't be used for older iISO Flash Shoe /Auto-lock Accessory Shoe / Reversed Hotshoe from some Konica Minolta and Sony cameras) | 【Picatinny Dovetail】 Picatinny / Weaver dovetail with slots is compatible with reflex sight. | 【11mm Scope Dovetail】 11mm scope dovetail is compatible with finderscope. | 【1/4" Threaded Hole】 It reserved 1/4" threaded hole in the bottom for mounting on a variety of brackets that with 1/4" screw. | 【Locking Ring with Rubber Pad】 Knurled locking ring is easy to tighten directly by hand. Rubber pad in the ring enhance the grip between adapter and flash shoe, and protect flash shoe from any damage due to mounting.