Get those professional strings prepared with the singer 4423 heavy duty sewing machine the machine that puts repetitive tasks into fast paces when youre the go to in clothing repairs and more then this sewing machine is just as reliable with extra high sewing speeds and a heavy duty frame thats built to lastrunning at over 1 000 stitches a minute this set complete with high quality accessories is fully automatic roaring to life at the tips of your toes literally with an adjustable fo