ITEM NAME:2x Electric Starter Drill Plate Cover For Vertex 16/18/21/25, SH 18/21 Description: Suitable for: Vertex 16/18/21/25cxp; SH 18/21 Japan-18cxp; 18/21/27 Nitro engine. Not suitable for engines larger than .18 (.19 + etc), Not suitable for 1/16 engines (.07 or .05 for example). For Vehicle Brand: HSP HPI Axial Himoto Wltoys, Any Other Brand Suits 12mm hex one-way bearing. Item NO.: 11011 Specification: Material: Plastic, Metal Size Chart: Hole center to hole center: 27mm Package Includes: 2 Pieces 11011 Drill Plate Note: Color might be slightly different due to the color calibration of each individual monitor. Please allow slightly measuring deviation due to manual measurement. SKU: DMO0021081719464692.Suitable for: Vertex 16/18/21/25cxp; SH 18/21 Japan-18cxp; 18/21/27 Nitro engine. 2 Pieces 11011 Drill Plate. Not suitable for engines larger than. 18 (.19 + etc), Not suitable for 1/16 engines (.07 or. 05 for example).