Semroc Centering Ring Wound Craft Paper BT-5 to BT-20 by 1/8"(1pk)(EB-20) SEM-CR-5-20-1/8
also Engine Block 20 (EB-20)
Spiral Kraft Wound Paper Ring for centering an BT-5 motor tube inside a BT-20 tube
ID = 0.559"
OD = 0.71"
Thickness = 0.125"
Made in the USA
Warranty for 1 year from manufacturer defects
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Very Well Made
Use them for a bt-20 thrust ring, very well made
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bt20 to bt5 center rings
Perfect fit
