Myhoomowe Lever Release Clamp:The Lever can be stopped in 2 positions:Full Closed and Full Open.The open position allows the quick release plate to slide within the clamp for positioning adjustment.Spring-Loaded Locking Pin.Quick Release Plate:The anti- mat on the plate which combine with the camera closely.Type:Lever Release Clamp + Quick Release PlateAttachment:1/4 inch on Plate,3/8 inch Mounting Socket on BaseCompatibility:All Arca- standard quick release plates,such as /ARCA-/KIRK//MARKINS//kangrinpoche// etc.colour:blackMaterial:Aluminum alloySize:50mm*60mm*25mmPackage Contents:1* fast loading base1* quick loading plate1* conversion screwOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.