Atom quad derby 59mm slim poison wheels 84a 4pk pinkatom39s go to wheel for any surface say goodbye to sliding out the poison provides awesome grip without that 39sluggish marshmallow39 feeling which allows for more rollpoison wheels will blow your competitors off the derby trackideal for indooroutdoor slick surfacessize 38mm x 59mmdurometer 84apurpose roller derbyhub hollow corecolour pinksold in packs of 4 wheels