Haoge CP-39 Screw Knob Quick Release Clamp Adapter with Hand Strap Bosses Boss Slot fit RRS Sunwayfoto Kirk Benro Arca Swiss Tripod or Monopod Head on Canon Nikon Sony Pentax Olympus Fujifilm Camera Three strap holes for camera's neck strap or sling that help you easy to take photos while on the go. Arca Swiss standard quick release clamp. Fast loading base with antiskid lock function. With the female thread of UNC 3/8" and 3/8" to 1/4" screw adapter, can be used on virtually any head, tripod or monopod. Bottom with AS standard dovetail, can be mount on ball head, panoramic head and clamp of AS standard.