Speedflow manufactures a comprehensive range of flare reducers, expanders and extensions. We are also extending our range of plugs and caps to include metric to complement our popular imperial sizes. 820-03-BLK 820-04-BLK 820-06-BLK 820-08-BLK 820-10-BLKĀ 820-12-BLK 820-16-BLK 820-20-BLK