Hardened steel, 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 PB123, come with fitted wooden box. B-123-H11-M, B-123-H23M, B-234-H23-M & B-246-H23-M have drilled, counterbored & tapped holes to allow screw mounting and conversion into angle plates & other precision set-ups.

MODEL	PAIR or SINGLE	HOLES	SQUARE	SIZE (INCHES)	WT(#)
B-123-H1-M B-123-H11-M B-123-H23-M B-123-NH-M B-234-H23-M B-246-H23-M PB-123	P P P P P P S	1 11 23 NONE 23 23 NONE	.0001" per in. .0001" per in. .0001" per in. .0001" per in. .0001" per in. .0001" per in. .0002" total	1 x 2 x 3 +/-.0002" 1 x 2 x 3 +.0001"/.0003" 1 x 2 x 3 +.0001"/.0003" 1 x 2 x 3 +.0001"/.0003" 2 x 3 x 4  +.0001"/.0003" 2 x 4 x 6 +.0001"/.0003" 1 x 2 x 3 +/-.0001"	3 3 3 3 12 24 2

SPECIAL SIZES AVAILABLE UPON REQUEST