TEMO Non Sparking Beryllium Bronze Copper 55mm F Spanner Wrench Length 450mm Beryllium Bronze (aka Beryllium Copper) is high strength, non-sparking, and non-metallic. Specialized applications include: hazardous environments, aerospace, musical instruments, and precision measurement devices. Product length is accurate but width and length are estimated based on current packing. The actual width and height are different. These bits are made to order with a 3-4 week lead time currently. Orders can not be cancelled once placed.