This is the Easy Fit hinge. It requires no 35mm holes to drill, no more drilling jigs, 
Just screw straight on.. 
It has the self closing spring which also holds your overheads up. 
no more lift up stays. (save$) (Small light overhead only) . 
no more special 35mm drill bit with drill press (save$)
Can be fitted inset, fulloverlay or half overlay. 
Adjustment in and out and left and right.