Manfrotto MS050M4-RC4 L Bracket, 33.07 lbs Load Capacity, 410PL QR Plate 719821338567 | eBay
Haoge 51mm Quick Release Clamp Adapter Convertor For Manfrotto Rc4 System To Arca-swiss Compatible, Fit 400pl / 405 / 410 / Rc4 - Tripod Monopods - AliExpress
Amazon.com : Haoge CP-MAS Quick Release Clamp with RC4 / 400PL Base Adapter Convertor for Manfrotto RC4 System to Arca-Swiss Compatible, Fit 400PL / 405/410 / RC4 : Electronics
Manfrotto 410 | Qr Clamp | Adapter | Tripod Monopods - Universal Qr Clamp Manfrotto Rc4 - Aliexpress