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MK Diamond Brushes
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Part Price
Thickness Width Length Material Lead Notes
Model Numbers
L187-688MKD
Figure 1PR Drawing
$35.80/
set of 2
0.187"
0.688" 1.000"
Black E 1.875" insulated


151774
Figure 201 DrawingorEared
                cap drawing
Both styles are currently in use
$12.50/
set of 2
6mm
7mm 12.5mm
Graphite G 19mm
4.8mm spring diam., 10mm cap diam. MK-170 MK-370, MK-470,
MK-770, 1503S
(Sanco and Mitachi motors)
161446
Eared cap drawing
$12.50/
set of 2
6mm
7mm
14.5mm
Gray E 18mm
w/auto cutoff,
5mm spring diam., 11mm cap diam.

158572
   158272
Eared cap drawing
$13.50/
set of 2
6mm
12.5mm
23mm
Gray E 30mm
9mm spring diam., 13.9mm cap diam. BX-3 (Sanco S-4 only)
MK-SDG
250816
Figure 276 Drawing
$20.00/
set of 2
6.25mm
8mm
15mm
Gray E 27mm
Terminal: QF3mm
MK-770 (Flex Motor)
160918
Eared cap drawing
$13.50/
set of 2
6.25mm
13.25mm
18.5mm
Gray E 31mm
9mm spring diam, 14mm cap diam.
MK-370 (Ryobi only)
BX-3 (Ryobi only)
155435
Eared cap drawing
$13.00/
set of 2
0.250"
0.375"
0.750"
Black E 0.875 0.216" spring diam, 0.445" cap diam.
MK-660 (Baldor motor only)
158271
Eared cap drawing
$12.00/
set of 2
7mm
11mm
23mm
Gray E 26mm
w/auto cutoff,
4.5mm spring diam., 12.7mm cap diam.
BX-3 (Sanco only, not S-4)
166228
Hitachi cap drawing
$8.00/
set of 2
7mm
17mm
18.5mm
Graphite G
32mm
8.6mm spring diam., 11mm cap diam.
MK-BX-4, MK-TX-3
153800
Eared cap drawing
$12.00/
set of 2
0.312"
0.312"
0.625"
Gray E
0.850"
0.233" spring diam., 0.224" cap diam.
MK-660 (Leeson motor only)
1559832 need specs








MK-660 (RAE motor only)
156428-R need specs








Ryobi 165479?
156684 need specs








MK-1070
157170 need specs








MK-70 old model