Three kits available: Imperial to BS46 Part 1 1958, Metric to BS4235 Part 2 1977 and a combined Metric/Imperial Kit Combination Kit includes all keys contained in the metric & imperial kits
Three kits available: Imperial to BS46 Part 1 1958, Metric to BS4235 Part 2 1977 and a combined Metric/Imperial Kit Combination Kit includes all keys contained in the metric & imperial kits