15mm Bracket Size and Left Hand Fitting of these Manually Operated Magazines.

The magazine system comprises of :-
1 x Magazine assembly.
1 x Mounting bracket.
1 x Pellet tray
1 x 3mm allen key
1 x Fitting instructions.

The .177magazine is compatible with most waisted diablo pellets.
The .22 magazine will handle most pellets under 8.75mm long.

The pellet tray is a formed piece of aluminium that improves the transfer of the pellet in to the breech by the bolt for both single and multi shot configurations.

Bracket will require a minimum of 15.0mm gap between the top of the dovetail and the bottom of your scope.
Please check. Medium mounts with most types of scope are normally sufficient.
 

See the drawing here for instructions where to measure to determine the size of bracket you need to suit your rifle.
See the notes on choosing Right or Left Fitting magazines.