V-Blocks with Clamps Set Our 91-305-3 V-Block Block Set is the perfect accessory for any machinist's toolbox. This set includes two V-Blocks with two clamps. Their precision machined surfaces ensure accurate alignment and reliable measurements, making them ideal for all kinds of machine shop work. Features include... Surfaces are square and parallel to 0.0005" V-Grooves are square and parallel with all surfaces to 0.0005" Corresponding dimensions for each pair are alike to 0.0005" Set includes... 1 pair matched V-Blocks with clamps 90° V angle 1.5" Length 1.25" Wide 1.25" Height