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they are usually light duty chinesium
True, but the good brands are hundreds of pounds, so you pays your money and you takes your choice. It was just a picture of the style of tool, @nogk can decide between £19.99 generic at Screwfix and https://www.lawson-his.co.uk/gedore-8017550-separator-puller-138-0-p71341 + https://www.lawson-his.co.uk/gedore-8019680-bearing-separator-140-0-p71356 for £128
Thanks! Tried a similar version with arms once but it could grip the arm. This looks better!