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, ducer, elevator, audio and high requirement equipment industry. Power Rating : 50W Resistance Value : 1 Ohm Resistance Tolerance : +/- 5% Mounting Hole Dia. : 0.3cm / 0.118" Mounting Hole Spacing : 4cm / 1.6" Case Size (Exclude Tabs) : 5 x 1.6 x 1.5cm / 2" x 0.62" x 0.59" (L*W*H) Overall Size (.) : 7.3 x 2.8cm / 2.9" x 1.1" (L*W) Case Material : Aluminum Case Color : Net Weight : 26g Package Content : 1 x Aluminium Resistor Note:Light 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.