These polyurethane O-Rings from JessEm are needed for replacement of your worn out O-Rings on either the JessEm Clear-Cut Stock Guides (Model 04215 - Item #159902) or the JessEm Clear-Cut Table Saw Stock Guides (Model 04301 - Item #158903). Simply cut off the old ones and slip the new ones back on. Two (2) O-rings needed per roller, four (4) O-rings per bag.
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