Joiner Balancer Pro - With Arm https://www.efihardware.com/products/2478/Joiner-Balancer-Pro-With-Arm
Lever Arm Length from Shaft Center to M5 Threaded Lever Holes: 39mm, 47mm.
(M5 threaded holes also suits 10/32UNF)
Overall Width: 16mm
Available in Blue, Black and Natural Anodizing.