The quick release L-bracket fits the Canon 5D Mark IVwithout battery grip
Machined from light weight 6061T6 aluminum.
Allows full access to rubber side hatches.
Allows full use of the remote switch even in the vertical format.
Custom fit with dedicated design for Canon 5D Mark IV
Made of highest quality duralumin
Hand strap hole
Scratch resistant hard-anodized surface.
Safe and ergonomically rounded corners and edges.
Extra 1/4" hole for a monopod.
Compatible with other major manufacturers' Arca-Swiss style
Comes with a wide headed 1/4"-20 screw (HB1.)
" Get an L-bracket
If you area keen tripod user, an L-bracket can make a massive difference. It allows effortless switching from horizontal to vertical framing, keeping all the weight on top and the lens in the same position. It´s far better than flipping the head 90 degrees, which can seriously unbalance the tripod and compromise stability"
(Article from Advanced Photographer UK)