Independent Ignition Supplies - Specialist magneto coil rewinders and component suppliers Online Catalogue : Accessories : Drive Couplings Simms Vernier Coupling Insert 19/20 tooth (294) Stock Number 294 - Reproduction - Hard rubber. Price:  £14.20 (Excluding: VAT at 17.5%) Online Catalogue : Accessories : Drive Couplings Independent Ignition Supplies - Specialist magneto coil rewinders and component suppliers