Sealey Induction Block Coil For VS230 & VS250 Induction Heater - Black VS2311. This Induction Block Coil is designed for use with the Sealey VS230 and VS250 Induction Heaters. It is black in color and has the model number VS2311. Specifications: Model Number: VS2311 Brand: Sealey Type: Induction Block Color: Black Compatible with: VS230 & VS250 Induction Heaters Weight: 0.178kg (approx.) Dimensions: 50 x 30 x 35mm (approx.)