5761074d_ot_Miter_Saw_Stop___OpenBuilds__Comments
[Qty] 1 [Part Name] V-Slot 20mm x 20mm V-Slot (4") [Part Link] http://openbuildspartstore.com/v-slot-linear-rail/ Link [Comments] 
This is the short piece of 20x20 V -Slot I used 4" for mine (had it left over from a build)
V-Slot Miter Saw Stop | OpenBuilds
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