To fit the following Howard models for the VRTS System:
QRake 8
QRake 10
QRake 12
Columbia TR6
Columbia TR7
Columbia TR8
Columbia TR9
Explorer MX8
Explorer MX10
Explorer MX12
Magnum MK10
Magnum MK12
Magnum MK14
Magnum MK16
RP2
RP4
RP5
RP6
RP8
RP10
RP12
Call 855-754-4011 for more info, or email vrtssystem@yahoo.com.