Sheet metal punch, special tool (in conjunction with the hand hydraulics, please order separately) for retrofitting cable feedthrough openings in cable trays. Incl. accessories, including adapter 3/4' (UNF 19) external thread - 1/2' internal thread The cable protection ring must be installed as cable protection and in personal danger areas! Dimensions Hole size H x W: 30 x 65 mm for material thickness: = 2 mm Material: steel, bright