AUTOTOOLHOME Dowel and Tenon Center Transfer Plugs Point 1/4", 5/16", 3/8" and 1/2" Set of 8 Accurately transfers dowel holes Wood Timber Marker Hole Align Center Transfer Plugs Internal centering pin locates center of dowel for accurate drilling Scribe point transfers mark for accurate drilling position Dowel Drill Centre Point Set Set includes eight pieces -- two of each size 1/4", 5/16", 3/8" and 1/2" diameter Steel centers for durable marking performance