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i have a Bosch PST 800 PEL 530 Watt Compact Jigsaw which only comes with 1 blade for cutting wood. i needed a blade for cutting a piece of thin metal sheet. this set includes blades for both wood and metal and was for a good price. the metal cutting blade got the job done. my only complaint so far is that the latch on the box is difficult to figure out and in the process of opening it, i broke it. now i have a piece of sellotape to keep the lid down.