Description: The PU-100*38.5mm slide-in quick release plate has a stainless steel camera screw and is a spare or replacement part for Ballheads and other Arca-Swiss compatible quick release clamps. Compatibility: Adopt international standard ACRA Akai standard design dimensions, compatible with many current camera clamping bases in the world (such as Benro, ACRA, KIRK, , RRS, Karen Bozi, MARKINS, FUKRON, , etc. ) Camera screws: Each quick release plate is equipped with a stainless steel camera screw.The camera screws can be directly locked by hand, or the coin tightens the locking force to ensure the tightness of the camera and the quick release plate. Pads: The overall anti-slip mat layout makes the camera more contact with the quick release plate, reducing the possibility of camera rotation and camera bottom injury. Surface: After anodizing, corrosion resistance, wear resistance, and smooth appearance. Specification: Material: Aluminum Alloy Color: Black Length: 100mm/3.93inch Width: 38.5mm/1.5 inch Thickness: 9mm/0.35'' (Universal Thickness of Arca-Swiss Standard QR Plates) Weight:69g Compatibility: Arca-Swiss Standard Package Includes: 1 Piece PU-100 Quick Release Plate 38.5mm : Please allow 1-3mm differs due to manual measurement. Due to the different display and different light, the picture may not show the actual color of the item. Thanks for your understanding.