Use Bridgeport’s 1004 Trade Size 4 (3/4") Anti-Short Bushings to protect conductor sheathing from sharp edges and rough ends within AC, MC and MCI-A cables. Place the bushing between the outer metal armor and the conductor at the point of connection to form a protective shield. Called "redheads," these bushings are made from sturdy red polyethylene plastic and are rated up to 90℃. Bushings are both UL and CSA listed. Trade size 4 bushings fit cable sizes 8/4, 6/2, 6/3, 4/2, 4/3 and 6/4.