24V 40W 1/4-in (6 35mm) Ceramic Cartridge Heater Fits Many CTC/Flashforge/Wanahoo ( MK9/MK10) 3D Printers with a and a 1/4in 6 35mm Bore Heater Hole Specifications Product: Single-head heating tube Diameter: 1/4 inch / 6 35mm Length: 20 mm Wire Length: 3ft 3in / 1m Voltage: 24V Power: 40W Package Contents 1pc - 40W 24V Ceramic Heater Cartridge with a 1/4-in (6 35mm) Diameter img{max-width:100%; height:auto;}