KIT INCLUDES: (1)Quick Shoe Plate Base Clamp with Bubble Level, (1)Universal Quick Shoe Plate; Note: The Camera, Tripod, Ball head are Not included COMPATIBILITY: Arca-Swiss Standard for Tripod Ballhead DURABLE: Aluminum Anodized surface treatment assures years of corrosion and abrasion-resistant operaton PRACTICAL DESIGN: Knob-type design for strong universality; Can conveniently adjust the width of clamp from 38 millimeter to 42 millimeter; Special anti-slip rubber pads enhance the grip between each plate and the mounted gear, and protect the gear from any damage due to mounting MOUNTLING THREAD: 3/8 inch to 1/4 inch adapter screw and 1/4 inch screw mount quick shoe plate NOTE: The Camera, Tripod, Ball head are Not included. Description: Mount your camera on a tripod easily with this Quick Shoe Plate and QR Clamp. With 3/8 inch to 1/4 inch adapter screw and 1/4 inch screw mount quick shoe plate, compatible with Arca Swiss standard. Quick Shoe QR Clamp: Knob-type design for strong universality, Can conveniently adjust the width of clamp from 38 millimeter to 42 millimeter. Built in Bubble level Material: Aluminum Alloy Mounting Screw: 3/8 inch to 1/4 inch adapter Quick Shoe Plate: Advanced CNC (Computerized Numeric Control) machine systems provide precise dimension to fit perfectly. Aluminum Anodized surface treatment assures years of corrosion and abrasion-resistant operaton. Superior quality aluminum alloy is used to ensure a light weight but super high strength support. Special anti-slip rubber pads enhance the grip between each plate and the mounted gear, and protect the gear from any damage due to mounting. Material: Metal Alloy Length: 5 centimeters Mounting Screw Diameter: 1/4 inch (the screw size that connecting the QR plate and camera) Compatibility: Arca-Swiss Standard Package Contents: 1x Quick Shoe Plate Base Clamp 1x Quick Shoe Plate