T-27/Flat - Used when grinding on flat surface, correct angle recommended between 0-15 degrees, best choice for smooth finishing.
T-29/Conical - Built in angle for grinding, this design is excellent for contour and edge work, angle at 10 degrees. It also provides greater surface contact and is more aggressive. Best at more dramatic angle of 15-25 degrees.
| 1 , Zirconia /Ceramic flap disc,with fiberglass backing pad. |
| Size |
Grit |
Maxrpm |
Type |
| 4"*5/8" |
36# |
40# |
60# |
80# |
120# |
15,300 |
T27 |
T29 |
| 4-1/2"*7/8" |
36# |
40# |
60# |
80# |
120# |
13,300 |
T27 |
T29 |
| 5"*7/8" |
36# |
40# |
60# |
80# |
120# |
12,000 |
T27 |
T29 |
| 7"*7/8" |
36# |
40# |
60# |
80# |
120# |
8,600 |
T27 |
T29 |
| 2, Aluminum Oxide Flap Disc,with fiberglass backing pad |
| Size |
Grit |
Maxrpm |
Type |
| 4"*5/8" |
36#-------400# |
15,300 |
T27 |
T29 |
| 4-1/2"*7/8" |
36#-------400# |
13,300 |
T27 |
T29 |
| 5"*7/8" |
36#-------400# |
12,000 |
T27 |
T29 |
| 7"*7/8" |
36#-------400# |
8,600 |
T27 |
T29 |
Audited Supplier 
){kind=link}