Bag plate designed to work with cheap Amazon Arca Rail Clamp like this one : https://www.amazon.com/Fotasy-Swiss-Release-Tripod-Monohead/dp/B00KNGN1BQ/ref=sr_1_3?crid=QE2INPW6ZRZC&dib=eyJ2IjoiMSJ9.AArZGHujTIJK17zZG-kMxJTYcRhbknNf3X0Z5nrU9epgHYVfFq1z6FzxezlMfr22oYxJDYTekuEQT28Dfs7m4xwp37KGBbaYc1EE_3Epd1Itzw9i0hZF32DBRuhuEmYprGSQm1tdaSgcAhy5wIEIuEqxR-j1-_y8hOe1_Jpa8I2ru2uw3LiFsNFltFEaoNH7adpeRpLAHQ1MW0bSgRRPMhYLqG2WNC7fd1YAxa0XJvo.MCzjM-J29wzRvUc66OJOGEmbXC-Wb36yI7UIgStMREk&dib_tag=se&keywords=arca+rail+clamp&qid=1711334295&sprefix=arca+rail%2Caps%2C133&sr=8-3