Product Name : Aluminium Resistor 50 watt rated power, 1 ohm resistance value, 5% tolerance, aluminum case in color, chassis mount, etc. Designed with screw tabs on both sides to tighten the resistor against a chassis or heat sink for greater heat dissipation. Widely used in power supply, transducer, elevator, audio and high requirement equipment industry. Power Rating: 50W Resistance Value: 1 Ohm Resistance Tolerance: +/- 5% Mounting Hole Dia.: 0.3cm / 0.118 inch Mounting Hole Spacing: 4cm / 1.6 inch Case Size (Exclude Tabs): 5 x 1.6 x 1.5cm / 2 inch x 0.62 inch x 0.59 inch (L x W x H) Overall Size (.): 7.3 x 2.8cm / 2.9 inch x 1.1 inch (L x W) Case Material: Aluminum Case Color: Net Weight: 104g Package Contents: 4 x Aluminium Resistor Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.