Suburban Tool - Precision 1-2-3 Setup & Tri-Blocks

123 Blocks are ideal for precision layout and setup

• Made of steel, carburized & hardened to Rockwell "C" and ground on all six sides.
• Available as single blocks or in matched pairs, per chart below.
• B-123-H1-M has one 1/2" through hole in 2" x 3" face.
• 11-hole models have 5/16-18 tapped holes.
• 23-hole models have 3/8-16 tapped holes.
• All models, except PB-123, furnished with a fitted wooden box.
• B-123-H11-M has drilled, counter-bored & tapped holes to allow screw mounting and conversion into angle plates & other precision set-ups.
• B-123-H23M, B-234-H23-M & B-246-H23-M have tapped holes & matching clearance to allow screw mounting and conversion into angle plates & other precision set-ups.