used for cutting discs, seals and rings up to a diameter of 50mm or 2", the (JLB) knives can be easily screwed onto the receiving disc and can be combined with each other (max. 2 knives), powerful handle, solid hammer head, long Lifetime, thanks to its patented anti-vibration system, a real comfort for the operator, set is delivered in a cardboard box This set consists of:e holder (incl. Allen key)e mounting disc for knives Ø 2 to 50 mm and 18 to 2" ( equipped with clamping screw)