PM501 Manfrotto-Type Quick Release Plate with Arca-Swiss Type Clamp for 501PL / RC3 / RC5 / NG Heads - Walmart.com
Amazon.com : PM501 Manfrotto Type Quick Release Plate with Arca Swiss Type Clamp Built in Compatible with 501PL / RC3 / RC5 / NG Heads Features ProMediaGear Strap Port, for Video Heads
Manfrotto 577 Rapid Connect Adapter with Sliding Mounting Plate (501PL - The Camera Exchange
Manfrotto-Type QR Plate with Arca-Swiss Type Clamp Built-in For 501PL / 502 / 504 / Nitro / RC3 / RC5 / NG Heads – ProMediaGear
SmallRig Quick Release Plate (Manfrotto 501PL style ) DSLR Camera Plate 2900 – Photo Camera Store
Dodd Camera - SmallRig Baseplate for BMDPCC 4K&6K Manfrotto 501PL Compatible
Manfrotto 501PL Sliding Quick Release Plate with 1/4"-20 501PL