Customized version of http://www.thingiverse.com/thing:1102812

Created with Customizer! http://www.thingiverse.com/apps/customizer/run?thing_id=1102812

Using the following options:

HoleStyle = 1
ArmThickness = 2
ArmWidth = 12
FilletRadius = 4
BoltCount = 3
AngleDegrees = 45
BoltDiameter = 2
Depth = 35
AngledLength = 5
SlotCount = 9
$fn = 50
Height = 18
BackThickness = 2
SlotWidth = 7
BoltHeadDiameter = 8