About This Convex bottom, Ridgeless, Competition Series Filter basket by IMS Fits most E61 group head portafilters For 58,5 mm tampers BORDER: Ø 70 mm (B70) BODY: Ø 59 mm INTERNAL Stainless steel AISI304 Food Safe. Electropolished surface. Made in Italy Overview Material : Stainless steel AISI304 Food Safe. Brand : verybarista Shape : Cylinder Number of Pieces : 1 Unit Count : 1.0 Count