Rings 0 Plenty 50pcs model rocket centering rings

21 sets of plywood centering rings. 
BT-80 X 24mm 2 pcs 
BT60 X 24mm 8 pcs
BT60 X 18mm 8 pcs
BT55 X 24mm 8 pcs
BT55 X 18mm 8pcs
BT20 X 13mm 8pcs
BT5 X 6mm MMX 8pcs
50pcs 1.5mm basswood plywood 
Plus I always throw in some extras. 
Custom sets/sizes available upon request.
I will have more size options available, as soon as possible. 
I will refund any unused shipping costs. This item ships for around $5-$6