Killark CGB8181SS - Revolutionary design covers a broader range of cable sizes. Grommet sleeves are field removable to adjust to multiple cable ranges and cable diameter variances. Eliminates carrying numerous amounts of different CGB type connectors for job sites. Available in sizes ranging from 1/2"” to 4” NPT in copper-free aluminum, zinc plated steel, 316L stainless steel and nickel plated brass finishes. - Suitable for use in Class I Divisions 2 when installed in accordance to NEC 501.10(B)(4). Approved for cable use including TC, TC-ER, TC-ER-HL, PLTC, PLTC-ER, ITC, ITC-HL and cords including S, SO, STO, ST, SJ, SJT, SJTO, SVO.