CMT 811.158.11B Pattern Bit w/Bearing 5/8" S=1/4" E-Z Spikes/Menders/Bases Why does this post base

Why does this post base feature a 1-inch standoff

Features two reversible insert knives for economical routing of grooves

131 x 2-1/2"

for precise bearing depth

CMT 811.158.11B Pattern Bit w/Bearing 5/8" S=1/4" E-Z Spikes/Menders/Bases Why does this post baseThe CMT 811. 158. 11B is a Straight Bit Short Series with Bearing Guide. CMT straight bits feature Industrial Chrome Carbide with SinterHIP processing for superior wear resistance. The Anti Kickback design provides added safety. SPECIFICATIONS Diameter (D) 5 8" Cutting Height (I) 3 4" Total Length (L) 2 5 8" Shank (S) 1 4" Number of Teeth 2 Product Type Straight Bit Short Series with Bearing Guide Shank 1 4" Blade Material Carbide Tipped (TCT)