52-475-500 Fowler X-Blox V-Block SetFowler X Blox V Block Set Use this universal holding tool for small, miniature or intricate parts. Ideal for holding, grinding indexing punches and pins, drilling, milling, EDM, inspection on optical comparators. Set includes 2 Small X Bloxs Dimensions: 1 1 2" L x 1 1 4" W x 1 1 4" H. Work capacity: Approximately 1" 2 Large X Bloxs Dimensions: 2" L x 1 1 2" W x 1 1 2" H. Work capacity: 1 1 2" Features include Surfaces are square and parallel within .