Quick change toolpost t37 5pcs. with steel v blocks matched pair and clamps set the holiday season is the busiest shopping period of the year, don? We ensure the product reaches you at the earliest. Main Block Size is 58 x 58 x 40 mm high with a 7/16 (11.1 mm) Stud Bore. Overall Dimension with Box 3-1/2''L x 3-1/4''W x 2-1/8''H.