All of the centering rings are Baltic Birch. They were cut with PML and LOC tubing in mind but will fit many other types of tubing.

Outer Dia.         Designed for PML Tubing                     Price

1.5"……………………… Bulk Plate…………………………………………. $1.00
1.5" ……………….….. Coupler Plate…………………………………… $1.00
1.5" …………………….. 29mm Mmount………………………………… $1.50

2.1"……………………… Bulk Plate…………………………………………. $1.00
2.1"…………………….. Coupler Plate…………………………………… $1.00
2.1" …………………….. 29mm Mmount………………………………… $1.50
2.1"……………………… 38mm Mmount………………………………… $1.50

2.5"……………………… Bulk Plate………………………………………… $1.00
2.5" …………………….. Coupler Plate…………………………………… $1.00
2.5"……………………… 29mm Mmount……………………………..... $1.50
2.5"……………………… 54mm Mmount………………………………… $1.50

3.0"……………………… Bulk Plate………………………………………… $1.25
3.0"……………………… Coupler Plate…………………………………… $1.25
3.0"……………………… 29mm Mmount………………………………… $1.75
3.0"………………………. 38mm Mmount………………………………… $1.75
3.0"……………………… 54m Mmount…………………………………… $1.75

3.9"……………………… Bulk Plate………………………………………… $1.25
3.9"……………………… Coupler Plate…………………………………… $1.25
3.9"……………………… 29mm Mmount………………………………… $1.75
3.9"……………………… 38mm Mmount………………………………… $2.00
3.9"……………………… 75mm Mmount………………………………… $3.50

6.0"……………………… 29mm Mmount………………………………… $4.00
6.0"……………………… 38mm Mmount………………………………… $4.00
6.0"……………………… 54mm Mmount………………………………… $4.00

7.5"……………………… Bulk Plate………………………………………… $5.00
7.5"……………………… Coupler Plate…………………………………… $5.00
7.5"……………………… 38mm Mmount………………………………… $5.00
7.5"……………………… 54mm Mmount………………………………… $5.00
7.5"……………………… 75mm Mmount………………………………… $6.00
7.5"……………………… 98mm Mmount………………………………… $6.00 

Outer Dia.           Designed for LOC Tubing                  Price

1.5"……………………… Bulk Plate………………………………………… $1.00
1.5" …………………….. Coupler Plate……………….……………….. $1.00
1.5" …………………….. 29mm MMount $1.50

2.1"……………………… Bulk Plate………………………………………… $1.00
2.1"……………………… Coupler Plate………………………………….. $1.00
2.1" …………………….. 29mm Mmount……………………………….. $1.50
2.1"……………………… 38mm Mmount……………………………….. $1.50

2.5"……………………… Bulk Plate………………………………………… $1.00
2.5" …………………….. Coupler Plate……………………………….. $1.00
2.5"……………………… 29mm Mmount……………………………….. $1.50
2.5"……………………… 38mm Mmount……………………………….. $1.50
2.5"……………………… 54mm Mmount……………………………….. $1.50

3.0"……………………… Bulk Plate……………………………………….. $1.25
3.0"……………………… Coupler Plate………………………………….. $1.25
3.0"……………………… 29mm Mmount……………………………….. $1.75
3.0"……………………… 38mm Mmount……………………………….. $1.75
3.0"……………………… 54m Mmount………………………………….. $1.75

3.9"……………………… Bulk Plate……………………………………….. $1.50
3.9"……………………… Coupler Plate………………………………….. $1.50
3.9"……………………… 29mm Mmount……………………………….. $2.00
3.9"……………………… 38mm Mmount……………………………….. $2.00
3.9"……………………… 54mm Mmount……………………………….. $2.00
3.9"……………………… 75mm Mmount……………………………….. $3.50

5.38"……………………. Bulk Plate………………………………………… $3.50
5.38"……………………. Coupler Plate………………………………….. $3.50
5.38"……………………. 54mm Mmount……………………………….. $4.50
5.38"……………………. 75mm Mmount……………………………….. $4.50
5.38"……………………. 98mm Mmount……………………………….. $4.50
5.38"……………………. To PML 29mm Mmount…………………… $3.50
5.38"……………………. To PML 38mm Mmount…………………… $3.50


7.5"……………………… Bulk Plate……………………………………….. $5.00
7.5"……………………… Coupler Plate………………………………….. $5.00
7.5"……………………… 75mm Mmount……………………………….. $6.00
7.5"……………………… 98mm Mmount……………………………….. $6.00

7.5"……………………… To PML 38mm Mmount…………………… $5.00
7.5"……………………… To PML 54mm Mmount…………………… $5.00