Features: brand new and high quality Safety Protections: Perfect to protect your fishes, turtles in tanks from water heater scalding. High Safety: Can also protect the heater from accidental breakage to avoid damage and hurt. Detachable Design: Detachable design makes it easier to adjust to the length you need. Suction Cups: With strong suction cups, it is quite convenient for you to install it in tanks. Quality: High-quality plastics constructed cases for long service. #0 suitable for 25W, 50W and 75W heating rods; #1 for 100W heating rods; #2 for 200W 300W heating rods; #3 for 300W 500W heating rods; #4 for 500W 800W 1000W heating rods. Specifications: Material: Plastics Color: Black Style: 5 Sizes Size (Approx.): #0-Length 18.2cm/ 7.16in #1-Length 24.1cm/9.48in #2-Length 300cm/11.81in #3-Length 36.2cm/14.25in #4-Length 42.5cm/16.73in Weight (Approx.): #0-26g #1-38g #2-48g #3-58g #4-75g Package Includes: 1 Piece Fish Tanks Heater Protectors (5 Sizes to Choose) note: 1.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to difference between different monitors, the picture may not reflect the actual color of the item. Thank you!