ITEM NAME:Electric Roto Starter Nitro Engine E-start Drill Plate for Infinity 18/21/27 img *{margin:0;padding:0;.Suitable for: Vertex 16/18/21/25cxp; SH 18/21 Japan-18cxp; 18/21/27 Nitro engine. 1 Piece 11012 Drill Plate. Not suitable for engines larger than. 18 (.19 + etc), Not suitable for 1/16 engines (.07 or. 05 for example).