15mm Railblock Combo can slide left/right to point lens center to Mattebox center, it is useful for some baseplates like Manfrotto 577 .
Includes:
1X 15mm RailBlock-1078
1x 15mm RailBlock - 1266
2x 1/4" Screws
1x Hex Spanner
Material: Aluminum Alloy
Net Weight:139g
