Metrical is one of the leading European manufacturers of core bits for diamond drills. All our products are produced on daily bases with different connections such as 1 1/4 unc, 1/2''BSP, M16 x 2, M30 and M38. All other types of connections can be produced on request. The standard core bits, which we supply from stock, are 1/2'' BSP measuring between 7 mm and 250 mm diameter with an effective length of 300 mm. The 1 ¼ unc core bits in stock vary in sizes from 50 mm to 800 mm diameter, with an effective length varying from 400, 420 and 500 mm. We have about 40,000 core bits in stock, ready for shipment. We can produce any diameter for which seamless precise tubes can be produced. The random diameters above 130 mm will be produced by barrel manufacturing and will have a delivery time of several business days. All core bits with a deviating length up to a diameter of 200 mm can be produced within one business day. This is possible because we have all necessary tube material and necessary connections in stock. Metrical delivers only directly to manufacturers and to the trade.