SLIK Quick Release Plate with 3/8"-16 Screw for Pro 800 Ballhead & 700DX Tripod, Black (618-340) Spare or Replacement Part 3/8"-16 threaded screw The all metal plate includes the industry standard 3/8 threaded screw for mounting to heavy duty film and digital cameras Durable rubber pad creates a solid slip free connection between the plate and camera to prevent camera drift Plate also uses tool free mounting design so you do not need a coin or screwdriver to securely attach the plate to your camera