Description: Good heat resistance, good insulation and high heat transfer efficiency make its work more stable and reliable. Sensitive temperature regulator, over-temperature protection device, with high-resistance heating wire, making it fever uniformly and stably and have long service life. Made of stainless steel material, the fish tank heating rod has long lifespan. The length of 50W is about 19cm. The length of 100W is about 22.5cm. The length of 200W is about 29cm. The length of 300W is about 38.5cm. The length of 500W is about 38.5cm. Their wire length is about 0.9m. This product is suitable for use in fresh water, sea water. Item Name: Fish Tank Heating Rod Material: Stainless Steel Voltage: AC220V-240V, 50/60HZ Power: 50W 100W 200W 300W 500W Specification: EU Plug Features: Adjustable, Automatic, Reliable Size Details: Wire Length: 90cm/35.43" (Approx.) 50W Length: 19cm/7.48" (Approx.) 100W Length: 22.5cm/8.86" (Approx.) 200W Length: 29cm/11.42" (Approx.) 300W Length: 38.5cm/15.16" (Approx.) 500W Length: 38.5cm/15.16" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Fish Tank Heating Rod