SmallRig Manfrotto-Style Aluminum Drop-In Base Plate for Manfrotto 501 – JG Superstore
Manfrotto 500PLONG quick-release plate
Digital Camera Quick Release Plate Camera Mount Bracket Support Base Plate For Manfrotto Adapter Clamp Tripod Hydraulic Head|Tripod Monopods| - AliExpress
Niceyrig QR Pack (Manfrotto)
CAMVATE Manfrotto Type Quick Release Base Clamping Plate And Sliding Plate Camera Mount (Red Color)
Amazon.com : NICEYRIG Quick Release Base Plate Compatible with Manfrotto 577, 501, 504, 701 for DSLR Camera 15mm Rail Support System : Electronics
Tissouoy 323 Quick Release Plate Clamp Adapter for Manfrotto 200PL-14 Camera Tripod - Walmart.com
Manfrotto 504PLONG Long Quick Release Mounting Plate - Stewarts Photo
SmallRig Quick Dovetail Base Plate for Manfrotto 501 Tripod Fluid Head-1280C | eBay
MANFROTTO QUICK RELEASE ADAPTER BASE - 577 W/501PL SLIDING VIDEO PLATE – Allen's Camera
LeftField QR Baseplate (Manfrotto) for RED V‑RAPTOR - Bright Tangerine